/* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/preproc.y,v 1.292 2004/07/05 09:45:53 meskes Exp $ */

/* Copyright comment */
%{
#include "postgres_fe.h"

#include "extern.h"

/*
 * Variables containing simple states.
 */
int struct_level = 0;
int braces_open; /* brace level counter */
int ecpg_informix_var = 0;
char	*connection = NULL;
char	*input_filename = NULL;

static int	QueryIsRule = 0, FoundInto = 0;
static int	initializer = 0;
static struct this_type actual_type[STRUCT_DEPTH];
static char *actual_startline[STRUCT_DEPTH];

/* temporarily store struct members while creating the data structure */
struct ECPGstruct_member *struct_member_list[STRUCT_DEPTH] = { NULL };

/* also store struct type so we can do a sizeof() later */
static char *ECPGstruct_sizeof = NULL;

/* for forward declarations we have to store some data as well */
static char *forward_name = NULL;

struct ECPGtype ecpg_no_indicator = {ECPGt_NO_INDICATOR, 0L, NULL, {NULL}};
struct variable no_indicator = {"no_indicator", &ecpg_no_indicator, 0, NULL};

struct ECPGtype ecpg_query = {ECPGt_char_variable, 0L, NULL, {NULL}};

static struct inf_compat_col
{
	char *name;
	char *indirection;
	struct inf_compat_col *next;
} *informix_col;

static struct inf_compat_val
{
	char *val;
	struct inf_compat_val *next;
} *informix_val;

/*
 * Handle parsing errors and warnings
 */
void
mmerror(int error_code, enum errortype type, char * error, ...)
{
	va_list ap;
	
	fprintf(stderr, "%s:%d: ", input_filename, yylineno);
	
	switch(type)
	{
		case ET_WARNING:
			fprintf(stderr, "WARNING: ");
			break;
		case ET_ERROR:
		case ET_FATAL:
			fprintf(stderr, "ERROR: ");
			break;
	}

	va_start(ap, error);
	vfprintf(stderr, error, ap);
	va_end(ap);
	
	fprintf(stderr, "\n");
	
	switch(type)
	{
		case ET_WARNING:
			break;
		case ET_ERROR:
			ret_value = error_code;
			break;
		case ET_FATAL:
			exit(error_code);
	}
}

/*
 * string concatenation
 */

static char *
cat2_str(char *str1, char *str2)
{
	char * res_str	= (char *)mm_alloc(strlen(str1) + strlen(str2) + 2);

	strcpy(res_str, str1);
	strcat(res_str, " ");
	strcat(res_str, str2);
	free(str1);
	free(str2);
	return(res_str);
}

static char *
cat_str(int count, ...)
{
	va_list		args;
	int			i;
	char		*res_str;

	va_start(args, count);

	res_str = va_arg(args, char *);

	/* now add all other strings */
	for (i = 1; i < count; i++)
		res_str = cat2_str(res_str, va_arg(args, char *));

	va_end(args);

	return(res_str);
}

char *
make_str(const char *str)
{
	char * res_str = (char *)mm_alloc(strlen(str) + 1);

	strcpy(res_str, str);
	return res_str;
}

static char *
make2_str(char *str1, char *str2)
{
	char * res_str	= (char *)mm_alloc(strlen(str1) + strlen(str2) + 1);

	strcpy(res_str, str1);
	strcat(res_str, str2);
	free(str1);
	free(str2);
	return(res_str);
}

static char *
make3_str(char *str1, char *str2, char *str3)
{
	char * res_str	= (char *)mm_alloc(strlen(str1) + strlen(str2) +strlen(str3) + 1);

	strcpy(res_str, str1);
	strcat(res_str, str2);
	strcat(res_str, str3);
	free(str1);
	free(str2);
	free(str3);
	return(res_str);
}

/* and the rest */
static char *
make_name(void)
{
	char * name = (char *)mm_alloc(yyleng + 1);

	strncpy(name, yytext, yyleng);
	name[yyleng] = '\0';
	return(name);
}

static char *
create_questionmarks(char *name, bool array)
{
	struct variable *p = find_variable(name);
	int count;
	char *result = EMPTY;

	/* In case we have a struct, we have to print as many "?" as there are attributes in the struct 
	 * An array is only allowed together with an element argument 
	 * This is essantially only used for inserts, but using a struct as input parameter is an error anywhere else 
	 * so we don't have to worry here. */
	
	if (p->type->type == ECPGt_struct || (array && p->type->type == ECPGt_array && p->type->u.element->type == ECPGt_struct))
	{
		struct ECPGstruct_member *m;

		if (p->type->type == ECPGt_struct)
			m = p->type->u.members;
		else
			m = p->type->u.element->u.members;

		for (count = 0; m != NULL; m=m->next, count++);
	}
	else
		count = 1;

	for (; count > 0; count --)
		result = cat2_str(result, make_str("? , "));

	/* removed the trailing " ," */

	result[strlen(result)-3] = '\0';
	return(result);
}

static char *
adjust_informix(struct arguments *list)
{
	/* Informix accepts DECLARE with variables that are out of scope when OPEN is called.
	 * This breaks standard and leads to some very dangerous programming. 
	 * Since they do, we have to work around and accept their syntax as well.
	 * But we will do so ONLY in Informix mode.
	 * We have to change the variables to our own struct and just store the pointer instead of the variable */

	 struct arguments *ptr;
	 char *result = make_str("");

	 for (ptr = list; ptr != NULL; ptr = ptr->next)
	 {
	 	char temp[20]; /* this should be sufficient unless you have 8 byte integers */
		char *original_var;
		
	 	/* change variable name to "ECPG_informix_get_var(<counter>)" */
		original_var = ptr->variable->name;
		sprintf(temp, "%d))", ecpg_informix_var);
		
		if ((ptr->variable->type->type != ECPGt_char && ptr->variable->type->type != ECPGt_unsigned_char) && atoi(ptr->variable->type->size) > 1)
		{
			ptr->variable = new_variable(cat_str(4, make_str("("), mm_strdup(ECPGtype_name(ptr->variable->type->u.element->type)), make_str(" *)(ECPG_informix_get_var("), mm_strdup(temp)), ECPGmake_array_type(ECPGmake_simple_type(ptr->variable->type->u.element->type, make_str("1")), ptr->variable->type->size), 0);
			sprintf(temp, "%d, (", ecpg_informix_var++);
		}
		else
		{
			ptr->variable = new_variable(cat_str(4, make_str("*("), mm_strdup(ECPGtype_name(ptr->variable->type->type)), make_str(" *)(ECPG_informix_get_var("), mm_strdup(temp)), ECPGmake_simple_type(ptr->variable->type->type, ptr->variable->type->size), 0);
			sprintf(temp, "%d, &(", ecpg_informix_var++);
		}
		
		/* create call to "ECPG_informix_set_var(<counter>, <pointer>. <linen number>)" */
		result = cat_str(5, result, make_str("ECPG_informix_set_var("), mm_strdup(temp), mm_strdup(original_var), make_str("), __LINE__);\n"));
		
		/* now the indicator if there is one */
		if (ptr->indicator->type->type != ECPGt_NO_INDICATOR)
		{
			/* change variable name to "ECPG_informix_get_var(<counter>)" */
			original_var = ptr->indicator->name;
			sprintf(temp, "%d))", ecpg_informix_var);
			
			/* create call to "ECPG_informix_set_var(<counter>, <pointer>. <linen number>)" */
			if (atoi(ptr->indicator->type->size) > 1)
			{
				ptr->indicator = new_variable(cat_str(4, make_str("("), mm_strdup(ECPGtype_name(ptr->indicator->type->type)), make_str(" *)(ECPG_informix_get_var("), mm_strdup(temp)), ECPGmake_simple_type(ptr->indicator->type->type, ptr->indicator->type->size), 0);
				sprintf(temp, "%d, (", ecpg_informix_var++);
			}
			else
			{
				ptr->indicator = new_variable(cat_str(4, make_str("*("), mm_strdup(ECPGtype_name(ptr->indicator->type->type)), make_str(" *)(ECPG_informix_get_var("), mm_strdup(temp)), ECPGmake_simple_type(ptr->indicator->type->type, ptr->indicator->type->size), 0);
				sprintf(temp, "%d, &(", ecpg_informix_var++);
			}
			result = cat_str(5, result, make_str("ECPG_informix_set_var("), mm_strdup(temp), mm_strdup(original_var), make_str("), __LINE__);\n"));
		}
	 }

	 return result;
}

static struct cursor *
add_additional_variables(char *name, bool insert)
{
	struct cursor *ptr;
	struct arguments *p;

	for (ptr = cur; ptr != NULL; ptr=ptr->next)
	{
		if (strcmp(ptr->name, name) == 0)
			break;
	}

	if (ptr == NULL)
	{
		mmerror(PARSE_ERROR, ET_ERROR, "trying to access an undeclared cursor %s\n", name);
		return NULL;
	}
	if (insert)
	{
		/* add all those input variables that were given earlier 
		 * note that we have to append here but have to keep the existing order */
		for (p = ptr->argsinsert; p; p = p->next)
			add_variable_to_tail(&argsinsert, p->variable, p->indicator);
	}

	/* add all those output variables that were given earlier */
	for (p = ptr->argsresult; p; p = p->next)
		add_variable_to_tail(&argsresult, p->variable, p->indicator);
	
	return ptr;
}
%}

%union {
	double	dval;
	char	*str;
	int     ival;
	struct	when		action;
	struct	index		index;
	int		tagname;
	struct	this_type	type;
	enum	ECPGttype	type_enum;
	enum	ECPGdtype	dtype_enum;
	struct	fetch_desc	descriptor;
	struct  su_symbol	struct_union;
}

/* special embedded SQL token */
%token	SQL_ALLOCATE SQL_AUTOCOMMIT SQL_BOOL SQL_BREAK
		SQL_CALL SQL_CARDINALITY SQL_CONNECT SQL_CONNECTION
		SQL_CONTINUE SQL_COUNT SQL_CURRENT SQL_DATA 
		SQL_DATETIME_INTERVAL_CODE
		SQL_DATETIME_INTERVAL_PRECISION SQL_DESCRIBE
		SQL_DESCRIPTOR SQL_DISCONNECT SQL_ENUM SQL_FOUND
		SQL_FREE SQL_GO SQL_GOTO SQL_IDENTIFIED
		SQL_INDICATOR SQL_KEY_MEMBER SQL_LENGTH
		SQL_LONG SQL_NAME SQL_NULLABLE SQL_OCTET_LENGTH
		SQL_OPEN SQL_OUTPUT SQL_RELEASE SQL_REFERENCE
		SQL_RETURNED_LENGTH SQL_RETURNED_OCTET_LENGTH SQL_SCALE
		SQL_SECTION SQL_SHORT SQL_SIGNED SQL_SQL SQL_SQLERROR
		SQL_SQLPRINT SQL_SQLWARNING SQL_START SQL_STOP
		SQL_STRUCT SQL_UNSIGNED SQL_VALUE SQL_VAR SQL_WHENEVER

/* C token */
%token	S_ADD S_AND S_ANYTHING S_AUTO S_CONST S_DEC S_DIV
		S_DOTPOINT S_EQUAL S_EXTERN S_INC S_LSHIFT S_MEMPOINT
		S_MEMBER S_MOD S_MUL S_NEQUAL S_OR S_REGISTER S_RSHIFT
		S_STATIC S_SUB S_VOLATILE
		S_TYPEDEF

/* I need this and don't know where it is defined inside the backend */
%token	TYPECAST

/* ordinary key words in alphabetical order */
%token <keyword> ABORT_P ABSOLUTE_P ACCESS ACTION ADD AFTER
        AGGREGATE ALL ALSO ALTER ANALYSE ANALYZE AND ANY ARRAY AS ASC
	ASSERTION ASSIGNMENT AT AUTHORIZATION

        BACKWARD BEFORE BEGIN_P BETWEEN BIGINT BINARY BIT
        BOOLEAN_P BOTH BY

        CACHE CALLED CASCADE CASE CAST CHAIN CHAR_P
	CHARACTER CHARACTERISTICS CHECK CHECKPOINT CLASS CLOSE
	CLUSTER COALESCE COLLATE COLUMN COMMENT COMMIT
	COMMITTED CONSTRAINT CONSTRAINTS CONVERSION_P CONVERT COPY
        CREATE CREATEDB CREATEUSER CROSS CSV CURRENT_DATE CURRENT_TIME
        CURRENT_TIMESTAMP CURRENT_USER CURSOR CYCLE

        DATABASE DAY_P DEALLOCATE DEC DECIMAL_P DECLARE DEFAULT DEFAULTS
	DEFERRABLE DEFERRED DEFINER DELETE_P DELIMITER DELIMITERS
	DESC DISTINCT DO DOMAIN_P DOUBLE_P DROP
        EACH ELSE ENCODING ENCRYPTED END_P ESCAPE EXCEPT EXCLUSIVE EXCLUDING
        EXECUTE EXISTS EXPLAIN EXTERNAL EXTRACT

        FALSE_P FETCH FIRST_P FLOAT_P FOR FORCE FOREIGN FORWARD FREEZE FROM
        FULL FUNCTION

	GET GLOBAL GRANT GROUP_P
        HANDLER HAVING HOLD HOUR_P

	ILIKE IMMEDIATE IMMUTABLE IMPLICIT_P IN_P INCLUDING INCREMENT
	INDEX INHERITS INITIALLY INNER_P INOUT INPUT_P
	INSENSITIVE INSERT INSTEAD INT_P INTEGER INTERSECT
	INTERVAL INTO INVOKER IS ISNULL ISOLATION

        JOIN

        KEY

	LANCOMPILER LANGUAGE LARGE_P LAST_P LEADING LEFT LEVEL LIKE LIMIT LISTEN
        LOAD LOCAL LOCATION LOCK_P

	MATCH MAXVALUE MINUTE_P MINVALUE MODE MONTH_P MOVE

	NAMES NATIONAL NATURAL NCHAR NEW NEXT NO NOCREATEDB
        NOCREATEUSER NONE NOT NOTHING NOTIFY NOTNULL NOWAIT NULL_P
	NULLIF NUMERIC

	OBJECT_P OF OFF OFFSET OIDS OLD ON ONLY OPERATOR OPTION OR ORDER
        OUT_P OUTER_P OVERLAPS OVERLAY OWNER

	PARTIAL PASSWORD PATH_P PENDANT PLACING POSITION
	PRECISION PRESERVE PREPARE PRIMARY PRIOR PRIVILEGES PROCEDURAL PROCEDURE

	QUOTE

	READ REAL RECHECK REFERENCES REINDEX RELATIVE_P RENAME REPEATABLE REPLACE
	RESET RESTART RESTRICT RETURNS REVOKE RIGHT ROLLBACK ROW ROWS RULE

	SCHEMA SCROLL SECOND_P SECURITY SELECT SEQUENCE SERIALIZABLE
        SESSION SESSION_USER SET SETOF SHARE SHOW SIMILAR SIMPLE SMALLINT SOME
        STABLE START STATEMENT STATISTICS STDIN STDOUT STORAGE STRICT_P
        SUBSTRING SYSID

        TABLE TABLESPACE TEMP TEMPLATE TEMPORARY THEN TIME TIMESTAMP TO TOAST
        TRAILING TRANSACTION TREAT TRIGGER TRIM TRUE_P TRUNCATE TRUSTED TYPE_P
        UNCOMMITTED UNENCRYPTED UNION UNIQUE UNKNOWN UNLISTEN UNTIL UPDATE USAGE
        USER USING

        VACUUM VALID VALUES VARCHAR VARYING VERBOSE VERSION VIEW VOLATILE
	WHEN WHERE WITH WITHOUT WORK WRITE
        YEAR_P
        ZONE

/* The grammar thinks these are keywords, but they are not in the keywords.c
 * list and so can never be entered directly.  The filter in parser.c
 * creates these tokens when required.
 */
%token	UNIONJOIN

/* Special keywords, not in the query language - see the "lex" file */
%token <str>	IDENT SCONST Op CSTRING CVARIABLE CPP_LINE IP BCONST XCONST
%token <ival>	ICONST PARAM
%token <dval>	FCONST

/* precedence: lowest to highest */
%left		UNION EXCEPT
%left		INTERSECT
%left		OR
%left		AND
%right		NOT
%right		'='
%nonassoc	'<' '>'
%nonassoc	LIKE ILIKE SIMILAR
%nonassoc	ESCAPE
%nonassoc	OVERLAPS
%nonassoc	BETWEEN
%nonassoc	IN_P
%left		POSTFIXOP					/* dummy for postfix Op rules */
%left		Op OPERATOR				/* multi-character ops and user-defined operators */
%nonassoc	NOTNULL
%nonassoc	ISNULL
%nonassoc	IS NULL_P TRUE_P FALSE_P UNKNOWN
%left		'+' '-'
%left		'*' '/' '%'
%left		'^'
/* Unary Operators */
%left		AT ZONE
%right		UMINUS
%left		'[' ']'
%left		'(' ')'
%left		TYPECAST
%left		'.'
%left		JOIN UNIONJOIN CROSS LEFT FULL RIGHT INNER_P NATURAL

%type  <str>	Iconst Fconst Sconst TransactionStmt CreateStmt UserId
%type  <str>	CreateAsElement OptCreateAs CreateAsList CreateAsStmt
%type  <str>	comment_text ConstraintDeferrabilitySpec TableElementList
%type  <str>	key_match ColLabel SpecialRuleRelation ColId columnDef
%type  <str>	ColConstraint ColConstraintElem drop_type Bconst Iresult
%type  <str>	TableConstraint OptTableElementList Xconst opt_transaction 
%type  <str>	ConstraintElem key_actions ColQualList type_name
%type  <str>	target_list target_el update_target_list alias_clause
%type  <str>	update_target_el qualified_name database_name alter_using
%type  <str>	access_method attr_name index_name name func_name
%type  <str>	file_name AexprConst c_expr ConstTypename var_list
%type  <str>	a_expr b_expr TruncateStmt CommentStmt OnCommitOption opt_by
%type  <str>	opt_indirection expr_list extract_list extract_arg
%type  <str>	position_list substr_list substr_from alter_column_default
%type  <str>	trim_list in_expr substr_for attrs TableFuncElement
%type  <str>	Typename SimpleTypename Numeric opt_float opt_numeric
%type  <str>	opt_decimal Character character opt_varying opt_charset
%type  <str>	opt_timezone opt_interval table_ref fetch_direction
%type  <str>	ConstDatetime AlterDomainStmt AlterSeqStmt
%type  <str>	SelectStmt into_clause OptTemp ConstraintAttributeSpec
%type  <str>	opt_table opt_all sort_clause sortby_list ConstraintAttr
%type  <str>	sortby qualified_name_list name_list ColId_or_Sconst
%type  <str>	group_clause having_clause from_clause opt_distinct opt_hold
%type  <str>	join_outer where_clause relation_expr sub_type arg_class
%type  <str>	opt_column_list insert_rest InsertStmt WithOidsAs param_name
%type  <str>	columnList DeleteStmt LockStmt UpdateStmt DeclareCursorStmt
%type  <str>	NotifyStmt columnElem UnlistenStmt TableElement rowdefinition
%type  <str>	copy_delimiter ListenStmt CopyStmt copy_file_name opt_binary
%type  <str>	FetchStmt from_in CreateOpClassStmt like_including_defaults
%type  <str>	ClosePortalStmt DropStmt VacuumStmt AnalyzeStmt opt_verbose
%type  <str>	opt_full func_arg OptWithOids opt_freeze alter_table_cmd 
%type  <str>	analyze_keyword opt_name_list ExplainStmt index_params
%type  <str>	index_elem opt_class access_method_clause alter_table_cmds
%type  <str>	index_opt_unique IndexStmt func_return ConstInterval
%type  <str>	func_args_list func_args opt_with def_arg overlay_placing
%type  <str>	def_elem def_list definition DefineStmt select_with_parens
%type  <str>	opt_instead event RuleActionList opt_using CreateAssertStmt
%type  <str>	RuleActionStmtOrEmpty RuleActionMulti func_as reindex_type
%type  <str>	RuleStmt opt_column oper_argtypes NumConst var_name
%type  <str>	MathOp RemoveFuncStmt aggr_argtype for_update_clause
%type  <str>	RemoveAggrStmt opt_procedural select_no_parens CreateCastStmt
%type  <str>	RemoveOperStmt RenameStmt all_Op opt_Trusted opt_lancompiler
%type  <str>	VariableSetStmt var_value zone_value VariableShowStmt
%type  <str>	VariableResetStmt AlterTableStmt from_list overlay_list
%type  <str>	user_list OptUserList OptUserElem relation_name OptTableSpace
%type  <str>	CreateUserStmt AlterUserStmt CreateSeqStmt OptSeqList
%type  <str>	OptSeqElem TriggerForSpec TriggerForOpt TriggerForType
%type  <str>	DropTrigStmt TriggerOneEvent TriggerEvents RuleActionStmt
%type  <str>	TriggerActionTime CreateTrigStmt DropPLangStmt DropCastStmt
%type  <str>	CreatePLangStmt TriggerFuncArgs TriggerFuncArg simple_select
%type  <str>	ViewStmt LoadStmt CreatedbStmt createdb_opt_item ExplainableStmt
%type  <str>	createdb_opt_list opt_encoding OptInherit opt_equal
%type  <str>	AlterUserSetStmt privilege_list privilege privilege_target
%type  <str>	opt_grant_grant_option opt_revoke_grant_option cursor_options
%type  <str>	transaction_mode_list_or_empty transaction_mode_list
%type  <str>	function_with_argtypes_list function_with_argtypes IntConstVar
%type  <str>	DropdbStmt ClusterStmt grantee RevokeStmt Bit DropOpClassStmt
%type  <str>	GrantStmt privileges PosAllConst constraints_set_list
%type  <str>	ConstraintsSetStmt AllConst CreateDomainStmt opt_nowait
%type  <str>	case_expr when_clause_list case_default case_arg when_clause
%type  <str>	select_clause opt_select_limit select_limit_value opt_recheck
%type  <str>	ConstraintTimeSpec AlterDatabaseSetStmt DropAssertStmt
%type  <str>	select_offset_value ReindexStmt join_type opt_boolean
%type  <str>	join_qual update_list joined_table opclass_item fetch_count
%type  <str>	opt_lock lock_type OptGroupList OptGroupElem array_expr_list
%type  <str>	OptConstrFromTable OptTempTableName StringConst array_expr
%type  <str>	constraints_set_mode comment_type opt_empty_parentheses
%type  <str>	CreateGroupStmt AlterGroupStmt DropGroupStmt key_delete
%type  <str>	opt_force key_update CreateSchemaStmt PosIntStringConst
%type  <str>	IntConst PosIntConst grantee_list func_type opt_or_replace
%type  <str>	select_limit opt_for_update_clause CheckPointStmt
%type  <str>	OptSchemaName OptSchemaEltList schema_stmt opt_drop_behavior
%type  <str>	handler_name any_name_list any_name opt_as insert_column_list
%type  <str>	columnref function_name insert_target_el AllConstVar
%type  <str>	insert_target_list insert_column_item DropRuleStmt
%type  <str>	createfunc_opt_item set_rest var_list_or_default
%type  <str>	CreateFunctionStmt createfunc_opt_list func_table
%type  <str>	DropUserStmt copy_from copy_opt_list copy_opt_item
%type  <str>	opt_oids TableLikeClause key_action opt_definition
%type  <str>	cast_context row qual_Op qual_all_Op opt_default
%type  <str>	CreateConversionStmt any_operator opclass_item_list
%type  <str>	iso_level type_list CharacterWithLength ConstCharacter
%type  <str>	CharacterWithoutLength BitWithLength BitWithoutLength
%type  <str>	ConstBit GenericType TableFuncElementList opt_analyze
%type  <str>	opt_sort_clause transaction_access_mode subquery_Op
%type  <str>	ECPGWhenever ECPGConnect connection_target ECPGOpen
%type  <str>	indicator ECPGExecute ECPGPrepare ecpg_using ecpg_into 
%type  <str>	storage_declaration storage_clause opt_initializer c_anything
%type  <str>	variable_list variable c_thing c_term ECPGKeywords_vanames
%type  <str>	opt_pointer ECPGDisconnect dis_name storage_modifier
%type  <str>	ECPGRelease execstring server_name ECPGVarDeclaration
%type  <str>	connection_object opt_server opt_port c_stuff c_stuff_item
%type  <str>	user_name opt_user char_variable ora_user ident opt_reference
%type  <str>	var_type_declarations quoted_ident_stringvar ECPGKeywords_rest
%type  <str>	db_prefix server opt_options opt_connection_name c_list
%type  <str>	ECPGSetConnection ECPGTypedef c_args ECPGKeywords ECPGCKeywords
%type  <str>	enum_type civar civarind ECPGCursorStmt ECPGDeallocate
%type  <str>	ECPGFree ECPGDeclare ECPGVar opt_at enum_definition
%type  <str>	struct_union_type s_struct_union vt_declarations execute_rest
%type  <str>	var_declaration type_declaration single_vt_declaration
%type  <str>	ECPGSetAutocommit on_off variable_declarations ECPGDescribe
%type  <str>	ECPGAllocateDescr ECPGDeallocateDescr symbol opt_output
%type  <str>	ECPGGetDescriptorHeader ECPGColLabel single_var_declaration
%type  <str>	reserved_keyword unreserved_keyword ecpg_interval opt_ecpg_using
%type  <str>	col_name_keyword func_name_keyword precision opt_scale
%type  <str>	ECPGTypeName using_list ECPGColLabelCommon UsingConst
%type  <str>	inf_val_list inf_col_list using_descriptor into_descriptor 
%type  <str>	prepared_name struct_union_type_with_symbol
%type  <str>	ECPGunreserved ECPGunreserved_interval cvariable
%type  <str>	AlterOwnerStmt OptTableSpaceOwner CreateTableSpaceStmt
%type  <str>	DropTableSpaceStmt indirection indirection_el ECPGSetDescriptorHeader

%type  <struct_union> s_struct_union_symbol

%type  <descriptor> ECPGGetDescriptor ECPGSetDescriptor

%type  <type_enum> simple_type signed_type unsigned_type

%type  <dtype_enum> descriptor_item desc_header_item

%type  <type>	var_type 

%type  <action> action

%type  <index>	opt_array_bounds 

%%
prog: statements;

statements: /*EMPTY*/
		| statements statement
		;

statement: ecpgstart opt_at stmt ';'	{ connection = NULL; }
		| ecpgstart stmt ';'
		| ecpgstart ECPGVarDeclaration
		{
			fprintf(yyout, "%s", $2);
                        free($2);
			output_line_number();
		}
		| ECPGDeclaration
		| c_thing		{ fprintf(yyout, "%s", $1); free($1); }
		| CPP_LINE		{ fprintf(yyout, "%s", $1); free($1); }
		| '{'			{ braces_open++; fputs("{", yyout); }
		| '}'			{ remove_typedefs(braces_open); remove_variables(braces_open--); fputs("}", yyout); }
		;

opt_at: AT connection_target
		{
			connection = $2;
			/*
			 *	Do we have a variable as connection target?
			 *	Remove the variable from the variable
			 *	list or else it will be used twice
			 */
			if (argsinsert != NULL)
				argsinsert = NULL;
		};

stmt:  AlterDatabaseSetStmt		{ output_statement($1, 0, connection); }
		| AlterDomainStmt	{ output_statement($1, 0, connection); }
		| AlterGroupStmt	{ output_statement($1, 0, connection); }
		| AlterOwnerStmt	{ output_statement($1, 0, connection); }
		| AlterSeqStmt		{ output_statement($1, 0, connection); }
		| AlterTableStmt	{ output_statement($1, 0, connection); }
		| AlterUserSetStmt	{ output_statement($1, 0, connection); }
		| AlterUserStmt		{ output_statement($1, 0, connection); }
		| AnalyzeStmt		{ output_statement($1, 0, connection); }
		| CheckPointStmt	{ output_statement($1, 0, connection); }
		| ClosePortalStmt
		{
			if (INFORMIX_MODE)
			{
				/* Informix also has a CLOSE DATABASE command that
				   essantially works like a DISCONNECT CURRENT 
				   as far as I know. */
				if (pg_strcasecmp($1+strlen("close "), "database") == 0)
				{
					if (connection)
		                                mmerror(PARSE_ERROR, ET_ERROR, "no at option for close database statement.\n");
								
					fprintf(yyout, "{ ECPGdisconnect(__LINE__, \"CURRENT\");");
		                        whenever_action(2);
		                        free($1);
				}
				else
					output_statement($1, 0, connection);
			}
			else
				output_statement($1, 0, connection);
		}
		| ClusterStmt		{ output_statement($1, 0, connection); }
		| CommentStmt		{ output_statement($1, 0, connection); }
		| ConstraintsSetStmt	{ output_statement($1, 0, connection); }
		| CopyStmt		{ output_statement($1, 0, connection); }
		| CreateAsStmt		{ output_statement($1, 0, connection); }
		| CreateAssertStmt	{ output_statement($1, 0, connection); }
		| CreateCastStmt	{ output_statement($1, 0, connection); }
		| CreateConversionStmt	{ output_statement($1, 0, connection); }
		| CreateDomainStmt	{ output_statement($1, 0, connection); }
		| CreateFunctionStmt	{ output_statement($1, 0, connection); }
		| CreateGroupStmt	{ output_statement($1, 0, connection); }
		| CreatePLangStmt	{ output_statement($1, 0, connection); }
		| CreateOpClassStmt	{ output_statement($1, 0, connection); }
		| CreateSchemaStmt	{ output_statement($1, 0, connection); }
		| CreateSeqStmt		{ output_statement($1, 0, connection); }
		| CreateStmt		{ output_statement($1, 0, connection); }
		| CreateTrigStmt	{ output_statement($1, 0, connection); }
		| CreateTableSpaceStmt	{ output_statement($1, 0, connection); }
		| CreateUserStmt	{ output_statement($1, 0, connection); }
		| CreatedbStmt		{ output_statement($1, 0, connection); }
		/*| DeallocateStmt	{ output_statement($1, 0, connection); }*/
		| DeclareCursorStmt	{ output_simple_statement($1); }
		| DefineStmt		{ output_statement($1, 0, connection); }
		| DeleteStmt		{ output_statement($1, 1, connection); }
		| DropAssertStmt	{ output_statement($1, 0, connection); }
		| DropCastStmt		{ output_statement($1, 0, connection); }
		| DropGroupStmt		{ output_statement($1, 0, connection); }
		| DropOpClassStmt	{ output_statement($1, 0, connection); }
		| DropPLangStmt		{ output_statement($1, 0, connection); }
		| DropRuleStmt		{ output_statement($1, 0, connection); }
		| DropStmt		{ output_statement($1, 0, connection); }
		| DropTableSpaceStmt	{ output_statement($1, 0, connection); }
		| DropTrigStmt		{ output_statement($1, 0, connection); }
		| DropUserStmt		{ output_statement($1, 0, connection); }
		| DropdbStmt		{ output_statement($1, 0, connection); }
		| ExplainStmt		{ output_statement($1, 0, connection); }
/*		| ExecuteStmt		{ output_statement($1, 0, connection); }*/
		| FetchStmt		{ output_statement($1, 1, connection); }
		| GrantStmt		{ output_statement($1, 0, connection); }
		| IndexStmt		{ output_statement($1, 0, connection); }
		| InsertStmt		{ output_statement($1, 1, connection); }
		| ListenStmt		{ output_statement($1, 0, connection); }
		| LoadStmt		{ output_statement($1, 0, connection); }
		| LockStmt		{ output_statement($1, 0, connection); }
		| NotifyStmt		{ output_statement($1, 0, connection); }
/*		| PrepareStmt		{ output_statement($1, 0, connection); }*/
		| ReindexStmt		{ output_statement($1, 0, connection); }
		| RemoveAggrStmt	{ output_statement($1, 0, connection); }
		| RemoveOperStmt	{ output_statement($1, 0, connection); }
		| RemoveFuncStmt	{ output_statement($1, 0, connection); }
		| RenameStmt		{ output_statement($1, 0, connection); }
		| RevokeStmt		{ output_statement($1, 0, connection); }
		| RuleStmt		{ output_statement($1, 0, connection); }
		| SelectStmt		{ output_statement($1, 1, connection); }
		| TransactionStmt
		{
			fprintf(yyout, "{ ECPGtrans(__LINE__, %s, \"%s\");", connection ? connection : "NULL", $1);
			whenever_action(2);
			free($1);
		}
		| TruncateStmt		{ output_statement($1, 0, connection); }
		| UnlistenStmt		{ output_statement($1, 0, connection); }
		| UpdateStmt		{ output_statement($1, 1, connection); }
		| VacuumStmt		{ output_statement($1, 0, connection); }
		| VariableSetStmt	{ output_statement($1, 0, connection); }
		| VariableShowStmt	{ output_statement($1, 0, connection); }
		| VariableResetStmt	{ output_statement($1, 0, connection); }
		| ViewStmt		{ output_statement($1, 0, connection); }
		| ECPGAllocateDescr
		{
			fprintf(yyout,"ECPGallocate_desc(__LINE__, %s);",$1);
			whenever_action(0);
			free($1);
		}
		| ECPGConnect
		{
			if (connection)
				mmerror(PARSE_ERROR, ET_ERROR, "no at option for connect statement.\n");

			fprintf(yyout, "{ ECPGconnect(__LINE__, %d, %s, %d); ", compat, $1, autocommit);
			reset_variables();
			whenever_action(2);
			free($1);
		}
		| ECPGCursorStmt
		{
			output_simple_statement($1);
		}
		| ECPGDeallocate
		{
			if (connection)
				mmerror(PARSE_ERROR, ET_ERROR, "no at option for deallocate statement.\n");
			fprintf(yyout, "{ ECPGdeallocate(__LINE__, %d, %s);", compat, $1);
			whenever_action(2);
			free($1);
		}
		| ECPGDeallocateDescr
		{
			if (connection)
				mmerror(PARSE_ERROR, ET_ERROR, "no at option for deallocate statement.\n");
			fprintf(yyout,"ECPGdeallocate_desc(__LINE__, %s);",$1);
			whenever_action(0);
			free($1);
		}
		| ECPGDeclare
		{
			output_simple_statement($1);
		}
		| ECPGDescribe
		{
			fprintf(yyout, "{ ECPGdescribe(__LINE__, %s,", $1);
			dump_variables(argsresult, 1);
			fputs("ECPGt_EORT);", yyout);
			fprintf(yyout, "}");
			output_line_number();
				
			/* whenever_action(2); */
			free($1);
		}
		| ECPGDisconnect
		{
			if (connection)
				mmerror(PARSE_ERROR, ET_ERROR, "no at option for disconnect statement.\n");

			fprintf(yyout, "{ ECPGdisconnect(__LINE__, %s);",
					$1 ? $1 : "\"CURRENT\"");
			whenever_action(2);
			free($1);
		}
		| ECPGExecute
		{
			output_statement($1, 0, connection);
		}
		| ECPGFree
		{
			fprintf(yyout, "{ ECPGdeallocate(__LINE__, %d, \"%s\");", compat, $1);

			whenever_action(2);
			free($1);
		}
		| ECPGGetDescriptor
		{
			lookup_descriptor($1.name, connection);
			output_get_descr($1.name, $1.str);
			free($1.name);
			free($1.str);
		}
		| ECPGGetDescriptorHeader
		{
			lookup_descriptor($1, connection);
			output_get_descr_header($1);
			free($1);
		}
		| ECPGOpen
		{
			struct cursor *ptr;

			if ((ptr = add_additional_variables($1, true)) != NULL)
				output_statement(mm_strdup(ptr->command), 0, ptr->connection ? mm_strdup(ptr->connection) : NULL);
			ptr->opened = true;
		}
		| ECPGPrepare
		{
			if (connection)
				mmerror(PARSE_ERROR, ET_ERROR, "no at option for prepare statement.\n");

			fprintf(yyout, "{ ECPGprepare(__LINE__, %s);", $1);
			whenever_action(2);
			free($1);
		}
		| ECPGRelease		{ /* output already done */ }
		| ECPGSetAutocommit
		{
			fprintf(yyout, "{ ECPGsetcommit(__LINE__, \"%s\", %s);", $1, connection ? connection : "NULL");
			whenever_action(2);
			free($1);
		}
		| ECPGSetConnection
		{
			if (connection)
				mmerror(PARSE_ERROR, ET_ERROR, "no at option for set connection statement.\n");

			fprintf(yyout, "{ ECPGsetconn(__LINE__, %s);", $1);
			whenever_action(2);
			free($1);
		}
		| ECPGSetDescriptor
		{
			lookup_descriptor($1.name, connection);
			output_set_descr($1.name, $1.str);
			free($1.name);
			free($1.str);
		}
		| ECPGSetDescriptorHeader
		{
			lookup_descriptor($1, connection);
			output_set_descr_header($1);
			free($1);
		}
		| ECPGTypedef
		{
			if (connection)
				mmerror(PARSE_ERROR, ET_ERROR, "no at option for typedef statement.\n");

			fprintf(yyout, "%s", $1);
			free($1);
			output_line_number();
		}
		| ECPGVar
		{
			if (connection)
				mmerror(PARSE_ERROR, ET_ERROR, "no at option for var statement.\n");

			output_simple_statement($1);
		}
		| ECPGWhenever
		{
			if (connection)
				mmerror(PARSE_ERROR, ET_ERROR, "no at option for whenever statement.\n");

			output_simple_statement($1);
		}
		;


/*
 * We start with a lot of stuff that's very similar to the backend's parsing
 */

/*****************************************************************************
 *
 * Create a new Postgres DBMS user
 *
 *
 *****************************************************************************/

CreateUserStmt: CREATE USER UserId opt_with OptUserList
			{ $$ = cat_str(4, make_str("create user"), $3, make_str("with"), $5); }
		;

opt_with:  WITH 		{ $$ = make_str("with"); }
		| /*EMPTY*/	{ $$ = EMPTY; }
		;


/*****************************************************************************
 *
 * Alter a postgresql DBMS user
 *
 *
 *****************************************************************************/

AlterUserStmt: ALTER USER UserId OptUserList
			{ $$ = cat_str(3, make_str("alter user"), $3, $4); }
		| ALTER USER UserId WITH OptUserList
			{ $$ = cat_str(4, make_str("alter user"), $3, make_str("with"), $5); }
		;

AlterUserSetStmt: ALTER USER UserId SET set_rest
			{ $$ = cat_str(4, make_str("alter user"), $3, make_str("set"), $5); }
		| ALTER USER UserId VariableResetStmt
			{ $$ = cat_str(3, make_str("alter user"), $3, $4); }
		;

/*****************************************************************************
 *
 * Drop a postgresql DBMS user
 *
 *
 *****************************************************************************/
DropUserStmt:  DROP USER user_list
			{ $$ = cat2_str(make_str("drop user"), $3);}
		;
/*
 * Options for CREATE USER and ALTER USER
 */

OptUserList: OptUserList OptUserElem	{ $$ = cat2_str($1, $2); }
		| /* EMPTY */					{ $$ = EMPTY; }
		;

OptUserElem:  PASSWORD Sconst
		{ $$ = cat2_str(make_str("password"), $2); }
		| SYSID PosIntConst
			{ $$ = cat2_str(make_str("sysid"), $2); }
		| CREATEDB
			{ $$ = make_str("createdb"); }
		| NOCREATEDB
			{ $$ = make_str("nocreatedb"); }
		| CREATEUSER
			{ $$ = make_str("createuser"); }
		| NOCREATEUSER
			{ $$ = make_str("nocreateuser"); }
		| IN_P GROUP_P user_list
			{ $$ = cat2_str(make_str("in group"), $3); }
		| VALID UNTIL Sconst
			{ $$ = cat2_str(make_str("valid until"), $3); }
		;

user_list:	user_list ',' UserId
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		| UserId
			{ $$ = $1; }
		;

/*****************************************************************************
 *
 * Create a postgresql group
 *
 *
 ****************************************************************************/
CreateGroupStmt:  CREATE GROUP_P UserId OptGroupList
			{ $$ = cat_str(3, make_str("create group"), $3, $4); }
		| CREATE GROUP_P UserId WITH OptGroupList
			{ $$ = cat_str(4, make_str("create group"), $3, make_str("with"), $5); }
		;

/*
 * Options for CREATE GROUP
 */
OptGroupList: OptGroupList OptGroupElem		{ $$ = cat2_str($1, $2); }
		| /* EMPTY */						{ $$ = EMPTY; }
		;

OptGroupElem:  USER user_list
			{ $$ = cat2_str(make_str("user"), $2); }
		| SYSID PosIntConst
			{ $$ = cat2_str(make_str("sysid"), $2); }
		;


/*****************************************************************************
 *
 * Alter a postgresql group
 *
 *
 *****************************************************************************/
AlterGroupStmt: ALTER GROUP_P UserId ADD USER user_list
			{ $$ = cat_str(4, make_str("alter group"), $3, make_str("add user"), $6); }
		| ALTER GROUP_P UserId DROP USER user_list
			{ $$ = cat_str(4, make_str("alter group"), $3, make_str("drop user"), $6); }
		;

/*****************************************************************************
 *
 * Drop a postgresql group
 *
 *
 *****************************************************************************/
DropGroupStmt: DROP GROUP_P UserId
			{ $$ = cat2_str(make_str("drop group"), $3); }
		;

/*****************************************************************************
 *
 * Manipulate a schema
 *
 *
 *****************************************************************************/

CreateSchemaStmt:  CREATE SCHEMA OptSchemaName AUTHORIZATION UserId OptTableSpace OptSchemaEltList
			{ $$ = cat_str(6, make_str("create schema"), $3, make_str("authorization"), $5, $6, $7); }
		| CREATE SCHEMA ColId OptTableSpace OptSchemaEltList
			{ $$ = cat_str(4, make_str("create schema"), $3, $4, $5); }
		;

OptSchemaName: ColId		{ $$ = $1; }
               | /* EMPTY */   { $$ = EMPTY; }
	       ;

OptSchemaEltList: OptSchemaEltList schema_stmt         { $$ = cat2_str($1, $2); }
		| /* EMPTY */   { $$ = EMPTY; }
		;

/*
 *     schema_stmt are the ones that can show up inside a CREATE SCHEMA
 *     statement (in addition to by themselves).
 */
schema_stmt: CreateStmt		{ $$ = $1; }
               | IndexStmt	{ $$ = $1; }
               | CreateSeqStmt	{ $$ = $1; }
               | CreateTrigStmt	{ $$ = $1; }
               | GrantStmt	{ $$ = $1; }
               | ViewStmt	{ $$ = $1; }
               ;



/*****************************************************************************
 *
 * Set PG internal variable
 *	  SET name TO 'var_value'
 * Include SQL92 syntax (thomas 1997-10-22):
 *	  SET TIME ZONE 'var_value'
 *
 *****************************************************************************/
VariableSetStmt:  SET set_rest
			{ $$ = cat2_str(make_str("set"), $2 ); }
		| SET LOCAL set_rest
			{ $$ = cat2_str(make_str("set local"), $3 ); }
		| SET SESSION set_rest
			{ $$ = cat2_str(make_str("set session"), $3 ); }
		;

set_rest:	var_name TO var_list_or_default
			{ $$ = cat_str(3, $1, make_str("to"), $3); }
		| var_name "=" var_list_or_default
                        { $$ = cat_str(3, $1, make_str("="), $3); }
		| TIME ZONE zone_value
			{ $$ = cat2_str(make_str("time zone"), $3); }
		| TRANSACTION transaction_mode_list
			{ $$ = cat2_str(make_str("transaction"), $2); }
		| SESSION CHARACTERISTICS AS TRANSACTION transaction_mode_list
			{ $$ = cat2_str(make_str("session characteristics as transaction"), $5); }
		| NAMES opt_encoding
			{ $$ = cat2_str(make_str("names"), $2); }
		| SESSION AUTHORIZATION ColId_or_Sconst
			{ $$ = cat2_str(make_str("session authorization"), $3); }
		| SESSION AUTHORIZATION DEFAULT
			{ $$ = make_str("session authorization default"); }
		;

var_name:	ColId			{ $$ = $1; }
		| var_name '.' ColId	{ $$ = cat_str(3, $1, make_str("."), $3); }
		;
		

var_list_or_default:  var_list
			{ $$ = $1; }
		| DEFAULT
			{ $$ = make_str("default"); }
		;

var_list:  var_value
			{ $$ = $1; }
		| var_list ',' var_value
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

iso_level:	READ UNCOMMITTED	{ $$ = make_str("read uncommitted"); }
		| READ COMMITTED	{ $$ = make_str("read committed"); }
		| REPEATABLE READ	{ $$ = make_str("repeatable read"); }
		| SERIALIZABLE		{ $$ = make_str("serializable"); }
		;

var_value:	opt_boolean		{ $$ = $1; }
		| AllConst		{ $$ = $1; }
		| ColId			{ $$ = $1; }
		;

opt_boolean:  TRUE_P		{ $$ = make_str("true"); }
		| FALSE_P			{ $$ = make_str("false"); }
		| ON				{ $$ = make_str("on"); }
		| OFF				{ $$ = make_str("off"); }
		;
/* Timezone values can be:
 * - a string such as 'pst8pdt'
 * - a column identifier such as "pst8pdt"
 * - an integer or floating point number
 * - a time interval per SQL99
 * ConstInterval and ColId give shift/reduce errors,
 * so use IDENT and reject anything which is a reserved word.
 */
zone_value:  AllConst		{ $$ = $1; }
		| ident		{ $$ = $1; }
		| ConstInterval StringConst opt_interval
			{ $$ = cat_str(3, $1, $2, $3); }
		| ConstInterval '(' PosIntConst ')' StringConst opt_interval
			{ $$ = cat_str(6, $1, make_str("("), $3, make_str(")"), $5, $6); }
		| DEFAULT
			{ $$ = make_str("default"); }
		| LOCAL
			{ $$ = make_str("local"); }
		;

opt_encoding:	StringConst		{ $$ = $1; }
		| DEFAULT				{ $$ = make_str("default"); }
		| /*EMPTY*/				{ $$ = EMPTY; }
		;

ColId_or_Sconst: ColId			{ $$ = $1; }
		| StringConst			{ $$ = $1; }
		;

VariableShowStmt:  SHOW ColId
			{ $$ = cat2_str(make_str("show"), $2); }
		| SHOW TIME ZONE
			{ $$ = make_str("show time zone"); }
		| SHOW TRANSACTION ISOLATION LEVEL
			{ $$ = make_str("show transaction isolation level"); }
		| SHOW SESSION AUTHORIZATION
			{ $$ = make_str("show session authorization"); }
		| SHOW ALL
			{ $$ = make_str("show all"); }
		;

VariableResetStmt:	RESET ColId
			{ $$ = cat2_str(make_str("reset"), $2); }
		| RESET TIME ZONE
			{ $$ = make_str("reset time zone"); }
		| RESET TRANSACTION ISOLATION LEVEL
			{ $$ = make_str("reset transaction isolation level"); }
		| RESET SESSION AUTHORIZATION
			{ $$ = make_str("reset session authorization"); }
		| RESET ALL
			{ $$ = make_str("reset all"); }
		;

ConstraintsSetStmt:    SET CONSTRAINTS constraints_set_list constraints_set_mode
			{ $$ = cat_str(3, make_str("set constraints"), $3, $4); }
		;

constraints_set_list:  ALL
			{ $$ = make_str("all"); }
		| name_list
			{ $$ = $1; }
		;

constraints_set_mode:  DEFERRED		{ $$ = make_str("deferred"); }
		| IMMEDIATE		{ $$ = make_str("immediate"); }
		;

/*
 * Checkpoint statement
 */
CheckPointStmt: CHECKPOINT	   { $$= make_str("checkpoint"); }
		;


/*****************************************************************************
 *
 *	ALTER TABLE variations
 *
 *****************************************************************************/

AlterTableStmt:
		ALTER TABLE relation_expr alter_table_cmds
			{ $$ = cat_str(3, make_str("alter table"), $3, $4); }
		;

alter_table_cmds:
		alter_table_cmd 			{ $$ = $1; }
		| alter_table_cmds ',' alter_table_cmd	{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

alter_table_cmd:
		ADD opt_column columnDef
/* ALTER TABLE <relation> ADD [COLUMN] <coldef> */
			{ $$ = cat_str(3, make_str("add"), $2, $3); }
/* ALTER TABLE <relation> ALTER [COLUMN] <colname> {SET DEFAULT <expr>|DROP DEFAULT} */
		| ALTER opt_column ColId alter_column_default
			{ $$ = cat_str(4, make_str("alter"), $2, $3, $4); }
/* ALTER TABLE <relation> ALTER [COLUMN] <colname> DROP NOT NULL */
		| ALTER opt_column ColId DROP NOT NULL_P
			{ $$ = cat_str(4, make_str("alter"), $2, $3, make_str("drop not null")); }
/* ALTER TABLE <relation> ALTER [COLUMN] <colname> SET NOT NULL */
		| ALTER opt_column ColId SET NOT NULL_P
			{ $$ = cat_str(4, make_str("alter"), $2, $3, make_str("set not null")); }
/* ALTER TABLE <relation> ALTER [COLUMN] <colname> SET STATISTICS <IntegerOnly> */
		| ALTER opt_column ColId SET STATISTICS PosIntConst
			{ $$ = cat_str(5, make_str("alter"), $2, $3, make_str("set statistics"), $6); }
/* ALTER TABLE <relation> ALTER [COLUMN] <colname> SET STORAGE <storagemode> */
		| ALTER opt_column ColId SET STORAGE ColId
			{ $$ = cat_str(5, make_str("alter"), $2, $3, make_str("set storage"), $6); }
/* ALTER TABLE <relation> DROP [COLUMN] <colname> {RESTRICT|CASCADE} */
		| DROP opt_column ColId opt_drop_behavior
			{ $$ = cat_str(4, make_str("drop"), $2, $3, $4); }
/* ALTER TABLE <relation> ALTER [COLUMN] <colname> TYPE <typename> [ USING <expression> ] */
		| ALTER opt_column ColId TYPE_P Typename alter_using
			{ $$ = cat_str(6, make_str("alter"), $2, $3, make_str("type"), $5, $6); }
/* ALTER TABLE <relation> ADD CONSTRAINT ... */
		| ADD TableConstraint
			{ $$ = cat_str(2, make_str("add"), $2); }
/* ALTER TABLE <relation> DROP CONSTRAINT ... */
		| DROP CONSTRAINT name opt_drop_behavior
			{ $$ = cat_str(3, make_str("drop constraint"), $3, $4); }
/* ALTER TABLE <relation> SET WITHOUT OIDS  */
		| SET WITHOUT OIDS
			{ $$ = make_str("set without oids"); }
 /* ALTER TABLE <name> CREATE TOAST TABLE */
		| CREATE TOAST TABLE
			{ $$ = make_str("create toast table"); }
/* ALTER TABLE <name> OWNER TO UserId */
		| OWNER TO UserId
			{ $$ = cat_str(2, make_str("owner to"), $3); }
/* ALTER TABLE <name> CLUSTER ON <indexname> */
		| CLUSTER ON name
			{ $$ = cat_str(2, make_str("cluster on"), $3); }
/* ALTER TABLE <name> SET WITHOUT CLUSTER */
		| SET WITHOUT CLUSTER
			{ $$ = make_str("set without cluster"); }
		;

alter_column_default:
		SET DEFAULT a_expr		{ $$ = cat2_str(make_str("set default"), $3); }
		| DROP DEFAULT			{ $$ = make_str("drop default"); }
		;

opt_drop_behavior: CASCADE 			{ $$ = make_str("cascade"); }
		| RESTRICT 			{ $$ = make_str("restrict"); }
		| /* EMPTY */ 			{ $$ = EMPTY; }
		;

alter_using:	USING a_expr			{ $$ = cat2_str(make_str("using"), $2); }
		| /* EMPTY */                   { $$ = EMPTY; }
		;
				
/*****************************************************************************
 *
 *		QUERY :
 *				close <portalname>
 *
 *****************************************************************************/

ClosePortalStmt:  CLOSE name
		{
			$$ = cat2_str(make_str("close"), $2);
		}
		;

/*****************************************************************************
 *
 *		QUERY :
 *				COPY [BINARY] <relname> FROM/TO
 *				[USING DELIMITERS <delimiter>]
 *
 *****************************************************************************/

CopyStmt:  COPY opt_binary qualified_name opt_oids copy_from
		copy_file_name copy_delimiter opt_with copy_opt_list
			{ $$ = cat_str(9, make_str("copy"), $2, $3, $4, $5, $6, $7, $8, $9); }
		;

copy_from:	TO					{ $$ = make_str("to"); }
		| FROM					{ $$ = make_str("from"); }
		;

/*
 * copy_file_name NULL indicates stdio is used. Whether stdin or stdout is
 * used depends on the direction. (It really doesn't make sense to copy from
 * stdout. We silently correct the "typo".		 - AY 9/94
 */
copy_file_name:  StringConst	{ $$ = $1; }
		| STDIN					{ $$ = make_str("stdin"); }
		| STDOUT				{ $$ = make_str("stdout"); }
		;

copy_opt_list: copy_opt_list copy_opt_item	{ $$ = cat2_str($1, $2); }
		| /* EMPTY */ 			{ $$ = EMPTY; }
		;

copy_opt_item:	BINARY		{ $$ = make_str("binary"); }
		| OIDS		{ $$ = make_str("oids"); }
		| DELIMITER opt_as StringConst
			{ $$ = cat_str(3, make_str("delimiter"), $2, $3); }
		| NULL_P opt_as StringConst
			{ $$ = cat_str(3, make_str("null"), $2, $3); }
		| CSV		{ $$ = make_str("csv"); }
		| QUOTE opt_as Sconst
			{ $$ = cat_str(3, make_str("quote"), $2, $3); }
		| ESCAPE opt_as Sconst
			{ $$ = cat_str(3, make_str("escape"), $2, $3); }
		| FORCE QUOTE columnList
			{ $$ = cat2_str(make_str("force quote"), $3); }
		| FORCE NOT NULL_P columnList
			{ $$ = cat2_str(make_str("force not null"), $4); }
		
		;

opt_binary:	BINARY		{ $$ = make_str("binary"); }
		| /* EMPTY */	{ $$ = EMPTY; }
		;

opt_oids:	WITH OIDS	{ $$ = make_str("with oids"); }
		| /* EMPTY */   { $$ = EMPTY; }
		;


/*
 * the default copy delimiter is tab but the user can configure it
 */
copy_delimiter:  opt_using DELIMITERS StringConst
			{ $$ = cat_str(3, $1, make_str("delimiters"), $3); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

opt_using:	USING		{ $$ = make_str("using"); }
		| /* EMPTY */	{ $$ = EMPTY; }
		;

/*****************************************************************************
 *
 *		QUERY :
 *				CREATE TABLE relname
 *
 *****************************************************************************/

CreateStmt:  CREATE OptTemp TABLE qualified_name '(' OptTableElementList ')'
				OptInherit OptWithOids OnCommitOption OptTableSpace
			{ $$ = cat_str(11, make_str("create"), $2, make_str("table"), $4, make_str("("), $6, make_str(")"), $8, $9, $10, $11); }
		| CREATE OptTemp TABLE qualified_name OF qualified_name
			'(' OptTableElementList ')' OptWithOids OnCommitOption OptTableSpace
			{ $$ = cat_str(12, make_str("create"), $2, make_str("table"), $4, make_str("of"), $6, make_str("("), $8, make_str(")"), $10, $11, $12); }
		;

/*
 * Redundancy here is needed to avoid shift/reduce conflicts,
 * since TEMP is not a reserved word.  See also OptTempTableName.
 */

OptTemp: TEMPORARY			{ $$ = make_str("temporary"); }
		| TEMP			{ $$ = make_str("temp"); }
		| LOCAL TEMPORARY	{ $$ = make_str("local temporary"); }
		| LOCAL TEMP		{ $$ = make_str("local temp"); }
		| GLOBAL TEMPORARY 	{ $$ = make_str("global temporary"); }
		| GLOBAL TEMP 		{ $$ = make_str("global temp"); }
		| /*EMPTY*/		{ $$ = EMPTY; }
		;


OptTableElementList:  TableElementList
			{ $$ = $1; }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;
TableElementList: TableElement
			{ $$ = $1; }
		| TableElementList ',' TableElement
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

TableElement:  columnDef		{ $$ = $1; }
		| TableLikeClause	{ $$ = $1; }
		| TableConstraint	{ $$ = $1; }
		;

columnDef:	ColId Typename ColQualList 
		{
			$$ = cat_str(3, $1, $2, $3);
		}
		;

ColQualList:  ColQualList ColConstraint { $$ = cat2_str($1,$2); }
		| /*EMPTY*/						{ $$ = EMPTY; }
		;

ColConstraint:	CONSTRAINT name ColConstraintElem
			{ $$ = cat_str(3, make_str("constraint"), $2, $3); }
		| ColConstraintElem		{ $$ = $1; }
		| ConstraintAttr		{ $$ = $1; }
		;

/* DEFAULT NULL is already the default for Postgres.
 * But define it here and carry it forward into the system
 * to make it explicit.
 * - thomas 1998-09-13
 *
 * WITH NULL and NULL are not SQL92-standard syntax elements,
 * so leave them out. Use DEFAULT NULL to explicitly indicate
 * that a column may have that value. WITH NULL leads to
 * shift/reduce conflicts with WITH TIME ZONE anyway.
 * - thomas 1999-01-08
 */
ColConstraintElem:	NOT NULL_P
			{ $$ = make_str("not null"); }
		| NULL_P
			{ $$ = make_str("null"); }
		| UNIQUE
			{ $$ = make_str("unique"); }
		| PRIMARY KEY
			{ $$ = make_str("primary key"); }
		| CHECK '(' a_expr ')'
			{ $$ = cat_str(3, make_str("check ("), $3, make_str(")")); }
		| DEFAULT b_expr
			{ $$ = cat2_str(make_str("default"), $2); }
		|  REFERENCES qualified_name opt_column_list key_match key_actions
			{ $$ = cat_str(5, make_str("references"), $2, $3, $4, $5); }
		;

/*
 * ConstraintAttr represents constraint attributes, which we parse as if
 * they were independent constraint clauses, in order to avoid shift/reduce
 * conflicts (since NOT might start either an independent NOT NULL clause
 * or an attribute).  analyze.c is responsible for attaching the attribute
 * information to the preceding "real" constraint node, and for complaining
 * if attribute clauses appear in the wrong place or wrong combinations.
 *
 * See also ConstraintAttributeSpec, which can be used in places where
 * there is no parsing conflict.
 */
ConstraintAttr: DEFERRABLE		{ $$ = make_str("deferrable"); }
		| NOT DEFERRABLE		{ $$ = make_str("not deferrable"); }
		| INITIALLY DEFERRED	{ $$ = make_str("initially deferred"); }
		| INITIALLY IMMEDIATE	{ $$ = make_str("initially immediate"); }
		;

TableLikeClause:  LIKE qualified_name like_including_defaults
		{
			$$ = cat_str(3, make_str("like"), $2, $3);
		}
		;

like_including_defaults:
		INCLUDING DEFAULTS      { $$ = make_str("including defaults"); }
              | EXCLUDING DEFAULTS	{ $$ = make_str("excluding defaults"); }
              | /* EMPTY */		{ $$ = EMPTY; } 
	      ;

/* ConstraintElem specifies constraint syntax which is not embedded into
 *	a column definition. ColConstraintElem specifies the embedded form.
 * - thomas 1997-12-03
 */
TableConstraint:  CONSTRAINT name ConstraintElem
			{ $$ = cat_str(3, make_str("constraint"), $2, $3); }
		| ConstraintElem
			{ $$ = $1; }
		;

ConstraintElem:  CHECK '(' a_expr ')'
			{ $$ = cat_str(3, make_str("check("), $3, make_str(")")); }
		| UNIQUE '(' columnList ')'
			{ $$ = cat_str(3, make_str("unique("), $3, make_str(")")); }
		| PRIMARY KEY '(' columnList ')'
			{ $$ = cat_str(3, make_str("primary key("), $4, make_str(")")); }
		| FOREIGN KEY '(' columnList ')' REFERENCES qualified_name opt_column_list
			key_match key_actions ConstraintAttributeSpec
			{ $$ = cat_str(8, make_str("foreign key("), $4, make_str(") references"), $7, $8, $9, $10, $11); }
		;

opt_column_list:  '(' columnList ')'	{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
               | /*EMPTY*/		{ $$ = EMPTY; }
	       ;

columnList:  columnList ',' columnElem
                               { $$ = cat_str(3, $1, make_str(","), $3); }
               | columnElem
                               { $$ = $1; }
               ;

columnElem:  ColId	{ $$ = $1; }
		;

key_match:	MATCH FULL
			{ $$ = make_str("match full"); }
		| MATCH PARTIAL
		{
			mmerror(PARSE_ERROR, ET_WARNING, "Currently unsupported FOREIGN KEY/MATCH PARTIAL will be passed to backend");
			$$ = make_str("match partial");
		}
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

key_actions:  key_delete			{ $$ = $1; }
		| key_update				{ $$ = $1; }
		| key_delete key_update 	{ $$ = cat2_str($1, $2); }
		| key_update key_delete 	{ $$ = cat2_str($1, $2); }
		| /*EMPTY*/					{ $$ = EMPTY; }
		;

key_delete: ON DELETE_P key_action
			{ $$ = cat2_str(make_str("on delete"), $3); }
		;

key_update: ON UPDATE key_action
			{ $$ = cat2_str(make_str("on update"), $3); }
		;

key_action:	NO ACTION			{ $$ = make_str("no action"); }
		| RESTRICT					{ $$ = make_str("restrict"); }
		| CASCADE					{ $$ = make_str("cascade"); }
		| SET DEFAULT				{ $$ = make_str("set default"); }
		| SET NULL_P				{ $$ = make_str("set null"); }
		;

OptInherit:  INHERITS '(' qualified_name_list ')'
			{ $$ = cat_str(3, make_str("inherits ("), $3, make_str(")")); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

OptWithOids:  WITH OIDS				{ $$ = make_str("with oids"); }
		| WITHOUT OIDS				{ $$ = make_str("without oids"); }
		| /*EMPTY*/					{ $$ = EMPTY; }
		;

OnCommitOption:   ON COMMIT DROP		{ $$ = make_str("on commit drop"); }
		| ON COMMIT DELETE_P ROWS	{ $$ = make_str("on commit delete rows"); }
		| ON COMMIT PRESERVE ROWS	{ $$ = make_str("on commit preserve rows"); }
		| /*EMPTY*/			{ $$ = EMPTY; }
		;

OptTableSpace:  TABLESPACE name	{ $$ = cat2_str(make_str("tablespace"), $2); }
		| /*EMPTY*/	{ $$ = EMPTY; }
		;

/*
 * Note: CREATE TABLE ... AS SELECT ... is just another spelling for
 * SELECT ... INTO.
 */

CreateAsStmt:  CREATE OptTemp TABLE qualified_name OptCreateAs WithOidsAs AS
		{ FoundInto = 0; }
		SelectStmt
		{
			if (FoundInto == 1)
				mmerror(PARSE_ERROR, ET_ERROR, "CREATE TABLE / AS SELECT may not specify INTO");

			$$ = cat_str(8, make_str("create"), $2, make_str("table"), $4, $5, $6, make_str("as"), $9);
		}
		;

/*
 * To avoid a shift/reduce conflict in CreateAsStmt, we need to
 * include the 'AS' terminal in the parsing of WITH/WITHOUT
 * OIDS. Unfortunately that means this production is effectively a
 * duplicate of OptWithOids.
 */
WithOidsAs:
                       WITH OIDS AS                 { $$ = make_str("with oids as"); }
                       | WITHOUT OIDS AS            { $$ = make_str("without oids as"); }
                       | AS                         { $$ = make_str("as"); }
                       ;


OptCreateAs:  '(' CreateAsList ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

CreateAsList:  CreateAsList ',' CreateAsElement
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		| CreateAsElement
			{ $$ = $1; }
		;

CreateAsElement:  ColId { $$ = $1; }
		;

/*****************************************************************************
 *
 *		QUERY :
 *				CREATE SEQUENCE seqname
 *                              ALTER SEQUENCE seqname
 *
 *****************************************************************************/

CreateSeqStmt:	CREATE OptTemp SEQUENCE qualified_name OptSeqList OptTableSpace
			{ $$ = cat_str(5, make_str("create"), $2, make_str("sequence"), $4, $5, $6); }
		;

AlterSeqStmt: ALTER SEQUENCE qualified_name OptSeqList
			{ $$ = cat_str(3,make_str("alter sequence"), $3, $4); }
		;

OptSeqList:  OptSeqList OptSeqElem	{ $$ = cat2_str($1, $2); }
		| /*EMPTY*/					{ $$ = EMPTY; }
		;

OptSeqElem:  CACHE NumConst
			{ $$ = cat2_str(make_str("cache"), $2); }
		| CYCLE
			{ $$ = make_str("cycle"); }
		| NO CYCLE
			{ $$ = make_str("no cycle"); }
		| INCREMENT opt_by NumConst
			{ $$ = cat_str(3, make_str("increment"), $2, $3); }
		| MAXVALUE NumConst
			{ $$ = cat2_str(make_str("maxvalue"), $2); }
		| MINVALUE NumConst
			{ $$ = cat2_str(make_str("minvalue"), $2); }
		| NO MAXVALUE
			{ $$ = make_str("no maxvalue"); }
		| NO MINVALUE
			{ $$ = make_str("no minvalue"); }
		| START opt_with NumConst
			{ $$ = cat_str(3, make_str("start"), $2, $3); }
		| RESTART opt_with NumConst
			{ $$ = cat_str(3, make_str("restart"), $2, $3); }
		;

opt_by:		BY	{ $$ = make_str("by"); }
		| /*EMPTY*/	{ $$ = EMPTY; }
		;

/*****************************************************************************
 *
 *		QUERIES :
 *				CREATE PROCEDURAL LANGUAGE ...
 *				DROP PROCEDURAL LANGUAGE ...
 *
 *****************************************************************************/

CreatePLangStmt:  CREATE opt_Trusted opt_procedural LANGUAGE ColId_or_Sconst
			HANDLER handler_name opt_lancompiler
			{ $$ = cat_str(8, make_str("create"), $2, $3, make_str("language"), $5, make_str("handler"), $7, $8); }
		;

opt_Trusted:	TRUSTED { $$ = make_str("trusted"); }
		| /*EMPTY*/		{ $$ = EMPTY; }
		;

/* This ought to be just func_name, but that causes reduce/reduce conflicts
 * (CREATE LANGUAGE is the only place where func_name isn't followed by '(').
 * Work around by using simple names instead.
 */
handler_name: name	{ $$ = $1; }
	| name attrs    { $$ = cat2_str($1, $2); }
               ;

opt_lancompiler: LANCOMPILER StringConst
			{ $$ = cat2_str(make_str("lancompiler"), $2); }
		| /*EMPTY*/
			{ $$ = ""; }
		;

DropPLangStmt:	DROP opt_procedural LANGUAGE StringConst opt_drop_behavior
			{ $$ = cat_str(5, make_str("drop"), $2, make_str("language"), $4, $5); }
		;

opt_procedural: PROCEDURAL	{ $$ = make_str("prcedural"); }
		| /*EMPTY*/			{ $$ = EMPTY; }
		;

/*****************************************************************************
 *
 *             QUERY:
 *             CREATE TABLESPACE tablespace LOCATION '/path/to/tablespace/'
 *
 *****************************************************************************/

CreateTableSpaceStmt: CREATE TABLESPACE name OptTableSpaceOwner LOCATION Sconst
			{ $$ = cat_str(5,make_str("create tablespace"), $3, $4, make_str("location"), $6); }
		;

OptTableSpaceOwner: OWNER name	{ $$ = cat2_str(make_str("owner"), $2); }
		| /*EMPTY*/ 	{ $$ = EMPTY; }
		;

/*****************************************************************************
 *
 *             QUERY :
 *                             DROP TABLESPACE <tablespace>
 *
 *             No need for drop behaviour as we cannot implement dependencies for
 *             objects in other databases; we can only support RESTRICT.
 *
 ****************************************************************************/


DropTableSpaceStmt: DROP TABLESPACE name	{ $$ = cat2_str(make_str("drop tablespace"), $3); };


/*****************************************************************************
 *
 *		QUERIES :
 *				CREATE TRIGGER ...
 *				DROP TRIGGER ...
 *
 *****************************************************************************/

CreateTrigStmt:  CREATE TRIGGER name TriggerActionTime TriggerEvents ON
				qualified_name TriggerForSpec
				EXECUTE PROCEDURE
				name '(' TriggerFuncArgs ')'
			{ $$ = cat_str(12, make_str("create trigger"), $3, $4, $5, make_str("on"), $7, $8, make_str("execute procedure"), $11, make_str("("), $13, make_str(")")); }
		|	CREATE CONSTRAINT TRIGGER name AFTER TriggerEvents ON
				qualified_name OptConstrFromTable
				ConstraintAttributeSpec
				FOR EACH ROW EXECUTE PROCEDURE
				func_name '(' TriggerFuncArgs ')'
			{ $$ = cat_str(13, make_str("create constraint trigger"), $4, make_str("after"), $6, make_str("on"), $8, $9, $10, make_str("for each row execute procedure"), $16, make_str("("), $18, make_str(")")); }
		;

TriggerActionTime:	BEFORE		{ $$ = make_str("before"); }
		| AFTER					{ $$ = make_str("after"); }
		;

TriggerEvents:	TriggerOneEvent
			{ $$ = $1; }
		| TriggerOneEvent OR TriggerOneEvent
			{ $$ = cat_str(3, $1, make_str("or"), $3); }
		| TriggerOneEvent OR TriggerOneEvent OR TriggerOneEvent
			{ $$ = cat_str(5, $1, make_str("or"), $3, make_str("or"), $5); }
		;

TriggerOneEvent:  INSERT	{ $$ = make_str("insert"); }
		| DELETE_P			{ $$ = make_str("delete"); }
		| UPDATE			{ $$ = make_str("update"); }
		;

TriggerForSpec:  FOR TriggerForOpt TriggerForType
			{ $$ = cat_str(3, make_str("for"), $2, $3); }
		| /* EMPTY */
			{ $$ = EMPTY; }
		;

TriggerForOpt:	EACH		{ $$ = make_str("each"); }
		| /*EMPTY*/			{ $$ = EMPTY; }
		;

TriggerForType:  ROW		{ $$ = make_str("row"); }
		| STATEMENT			{ $$ = make_str("statement"); }
		;

TriggerFuncArgs:  TriggerFuncArg
			{ $$ = $1; }
		| TriggerFuncArgs ',' TriggerFuncArg
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

TriggerFuncArg:  PosAllConst 	{ $$ = $1; }
		| ColId		{ $$ = $1; }
		;

OptConstrFromTable: /* Empty */		{ $$ = EMPTY; }
		| FROM qualified_name	{ $$ = cat2_str(make_str("from"), $2); }
		;

ConstraintAttributeSpec: ConstraintDeferrabilitySpec	{ $$ = $1; }
		| ConstraintDeferrabilitySpec ConstraintTimeSpec
		{
			if (strcmp($1, "deferrable") != 0 && strcmp($2, "initially deferrable") == 0 )
				mmerror(PARSE_ERROR, ET_ERROR, "INITIALLY DEFERRED constraint must be DEFERRABLE");

			$$ = cat2_str($1, $2);
		}
		| ConstraintTimeSpec		{ $$ = $1; }
		| ConstraintTimeSpec ConstraintDeferrabilitySpec
		{
			if (strcmp($2, "deferrable") != 0 && strcmp($1, "initially deferrable") == 0 )
				mmerror(PARSE_ERROR, ET_ERROR, "INITIALLY DEFERRED constraint must be DEFERRABLE");

			$$ = cat2_str($1, $2);
		}
		;

ConstraintDeferrabilitySpec: NOT DEFERRABLE
			{ $$ = make_str("not deferrable"); }
		| DEFERRABLE
			{ $$ = make_str("deferrable"); }
		;

ConstraintTimeSpec: INITIALLY IMMEDIATE
			{ $$ = make_str("initially immediate"); }
		| INITIALLY DEFERRED
			{ $$ = make_str("initially deferred"); }
		;

DropTrigStmt:  DROP TRIGGER name ON qualified_name opt_drop_behavior
			{ $$ = cat_str(5, make_str("drop trigger"), $3, make_str("on"), $5, $6); }
		;

/*****************************************************************************
 *
 *             QUERIES :
 *                             CREATE ASSERTION ...
 *                             DROP ASSERTION ...
 *
 *****************************************************************************/
CreateAssertStmt:  CREATE ASSERTION name
                       CHECK '(' a_expr ')' ConstraintAttributeSpec
		        {
				mmerror(PARSE_ERROR, ET_ERROR, "CREATE ASSERTION is not yet supported");
		       		$$ = cat_str(6, make_str("create assertion"), $3, make_str("check ("), $6, make_str(")"), $8);
			}
		;

DropAssertStmt:  DROP ASSERTION name
	{
		mmerror(PARSE_ERROR, ET_ERROR, "DROP ASSERTION is not yet supported");
		$$ = cat2_str(make_str("drop assertion"), $3);
	}
	;


/*****************************************************************************
 *
 *		QUERY :
 *				define (type,operator,aggregate)
 *
 *****************************************************************************/

DefineStmt:  CREATE AGGREGATE func_name definition
			{ $$ = cat_str(3, make_str("create aggregate"), $3, $4); }
		| CREATE OPERATOR all_Op definition
			{ $$ = cat_str(3, make_str("create operator"), $3, $4); }
		| CREATE TYPE_P any_name definition
			{ $$ = cat_str(3, make_str("create type"), $3, $4); }
		| CREATE TYPE_P any_name AS rowdefinition
			{ $$ = cat_str(4, make_str("create type"), $3, make_str("as"), $5); }
		;

rowdefinition: '(' TableFuncElementList ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")"));}
		;

definition:  '(' def_list ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		;

def_list:  def_elem					{ $$ = $1; }
		| def_list ',' def_elem		{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

def_elem:  ColLabel '=' def_arg		{ $$ = cat_str(3, $1, make_str("="), $3); }
		| ColLabel					{ $$ = $1; }
		;

/* Note: any simple identifier will be returned as a type name! */
def_arg:  func_return				{  $$ = $1; }
		| qual_all_Op					{  $$ = $1; }
		| AllConst					{  $$ = $1; }
		;

CreateOpClassStmt:      CREATE OPERATOR CLASS any_name opt_default FOR TYPE_P Typename
                        USING access_method AS opclass_item_list
				{
					$$ = cat_str(9, make_str("create operator class"), $4, $5, make_str("for type"), $8, make_str("using"), $10, make_str("as"), $12);
				}
				;

opclass_item_list:	opclass_item		{ $$ = $1; }
			| opclass_item_list ',' opclass_item	{ $$ = cat_str(3, $1, make_str(","), $3); }
			;

opclass_item:	OPERATOR PosIntConst any_operator opt_recheck
			{ $$ = cat_str(4, make_str("operator"), $2, $3, $4); }
		| OPERATOR PosIntConst any_operator '(' oper_argtypes ')' opt_recheck
			{ $$ =  cat_str(7, make_str("operator"), $2, $3, make_str("("), $5, make_str(")"), $7); }
		| FUNCTION PosIntConst func_name func_args
			{ $$ = cat_str(4, make_str("function"), $2, $3, $4); }
		| STORAGE Typename
			{ $$ = cat2_str(make_str("storage"), $2); }
		;

opt_default:   DEFAULT	{ $$ = make_str("default"); }
	|  /*EMPTY*/    { $$ = EMPTY; }
	;

opt_recheck:   RECHECK	{ $$ = make_str("recheck"); }
	|  /*EMPTY*/    { $$ = EMPTY; }
	;

DropOpClassStmt: DROP OPERATOR CLASS any_name USING access_method opt_drop_behavior
			{ $$ = cat_str(5,make_str("drop operator class"), $4, make_str("using"), $6, $7); }
		;

/*****************************************************************************
 *
 *		QUERY:
 *
 *			   DROP itemtype itemname [, itemname ...]
 *
 *****************************************************************************/

DropStmt:  DROP drop_type any_name_list opt_drop_behavior
			{ $$ = cat_str(4, make_str("drop"), $2, $3, $4); }
		;

drop_type:	TABLE			{ $$ = make_str("table"); }
		| SEQUENCE		{ $$ = make_str("sequence"); }
		| VIEW			{ $$ = make_str("view"); }
		| INDEX			{ $$ = make_str("index"); }
		| TYPE_P		{ $$ = make_str("type"); }
		| DOMAIN_P		{ $$ = make_str("domain"); }
		| CONVERSION_P		{ $$ = make_str("conversion"); }
		| SCHEMA		{ $$ = make_str("schema"); }
		;

any_name_list:  any_name
                       { $$ = $1; }
               | any_name_list ',' any_name
                       { $$ = cat_str(3, $1, make_str(","), $3); }
               ;

any_name: ColId        { $$ = $1; }
	| ColId attrs  { $$ = cat2_str($1, $2); }
        ;

/*
 * The slightly convoluted way of writing this production avoids reduce/reduce
 * errors against indirection_el.
 */
attrs: '.' attr_name		{ $$ = cat2_str(make_str("."), $2); }
	| '.' attr_name attrs	{ $$ = cat_str(3, make_str("."), $2, $3); }
	;

/*****************************************************************************
 *
 *			   QUERY:
 *							   truncate table relname
 *
 *****************************************************************************/
TruncateStmt:  TRUNCATE opt_table qualified_name
			{ $$ = cat_str(3, make_str("truncate table"), $2, $3); }
		;

/*****************************************************************************
 *
 *		QUERY:
 *			fetch/move
 *
 *****************************************************************************/

/* This is different from the backend as we try to be compatible with many other
 * embedded SQL implementations. So we accept their syntax as well and 
 * translate it to the PGSQL syntax. */
 
FetchStmt: FETCH fetch_direction from_in name ecpg_into
			{
				add_additional_variables($4, false);
				$$ = cat_str(4, make_str("fetch"), $2, $3, $4);
			}
		| FETCH fetch_direction name ecpg_into
			{
				add_additional_variables($3, false);
				$$ = cat_str(4, make_str("fetch"), $2, make_str("from"), $3);
			}
		| FETCH from_in name ecpg_into
			{
			        add_additional_variables($3, false);
				$$ = cat_str(3, make_str("fetch"), $2, $3);
			}
		| FETCH name ecpg_into
			{
			        add_additional_variables($2, false);
				$$ = cat2_str(make_str("fetch"), $2);
			}
		| FETCH fetch_direction from_in name
			{
			        add_additional_variables($4, false);
				$$ = cat_str(4, make_str("fetch"), $2, $3, $4);
			}
		| FETCH fetch_direction name
			{
			        add_additional_variables($3, false);
				$$ = cat_str(4, make_str("fetch"), $2, make_str("from"), $3);
			}
		| FETCH from_in name 
			{
				add_additional_variables($3, false);
				$$ = cat_str(3, make_str("fetch"), $2, $3);
			}
		| FETCH name 
			{
			        add_additional_variables($2, false);
				$$ = cat2_str(make_str("fetch"), $2);
			}
		| MOVE fetch_direction from_in name
			{ $$ = cat_str(4, make_str("move"), $2, $3, $4); }
		| MOVE name
			{ $$ = cat2_str(make_str("move"), $2); }
		;

fetch_direction:  NEXT				{ $$ = make_str("next"); }
		| PRIOR				{ $$ = make_str("prior"); }
		| FIRST_P			{ $$ = make_str("first"); }
		| LAST_P			{ $$ = make_str("last"); }
		| ABSOLUTE_P fetch_count	{ $$ = cat2_str(make_str("absolute"), $2); }
		| RELATIVE_P fetch_count	{ $$ = cat2_str(make_str("relative"), $2); }
		| fetch_count			{ $$ = $1; }
		| ALL				{ $$ = make_str("all"); }
		| FORWARD			{ $$ = make_str("forward"); }
		| FORWARD fetch_count		{ $$ = cat2_str(make_str("forward"), $2); }
		| FORWARD ALL			{ $$ = make_str("forward all"); }
		| BACKWARD			{ $$ = make_str("backward"); }
		| BACKWARD fetch_count		{ $$ = cat2_str(make_str("backward"), $2); }
		| BACKWARD ALL			{ $$ = make_str("backward all"); }
		;

fetch_count: IntConst	{ $$ = $1; }
	;

from_in: IN_P				{ $$ = make_str("in"); }
		| FROM			{ $$ = make_str("from"); }
		;

CommentStmt:   COMMENT ON comment_type name IS comment_text
			{ $$ = cat_str(5, make_str("comment on"), $3, $4, make_str("is"), $6); }
		| COMMENT ON AGGREGATE func_name '(' aggr_argtype ')' IS comment_text
			{ $$ = cat_str(6, make_str("comment on aggregate"), $4, make_str("("), $6, make_str(") is"), $9); }
		| COMMENT ON FUNCTION func_name func_args IS comment_text
			{ $$ = cat_str(5, make_str("comment on function"), $4, $5, make_str("is"), $7); }
		| COMMENT ON OPERATOR all_Op '(' oper_argtypes ')' IS comment_text
			{ $$ = cat_str(6, make_str("comment on operator"), $4, make_str("("), $6, make_str(") is"), $9); }
		| COMMENT ON TRIGGER name ON any_name IS comment_text
			{ $$ = cat_str(6, make_str("comment on trigger"), $4, make_str("on"), $6, make_str("is"), $8); }
		| COMMENT ON RULE name ON any_name IS comment_text
			{ $$ = cat_str(6, make_str("comment on rule"), $4, make_str("on"), $6, make_str("is"), $8); }
		| COMMENT ON RULE name IS comment_text
			{ $$ = cat_str(4, make_str("comment on rule"), $4, make_str("is"), $6); }
		| COMMENT ON OPERATOR CLASS any_name USING access_method IS comment_text
			{ $$ = cat_str(6, make_str("comment on operator class"), $5, make_str("using"), $7, make_str("is"), $9); }
		| COMMENT ON LARGE_P OBJECT_P NumConst IS comment_text
			{ $$ = cat_str(4, make_str("comment on large object"), $5, make_str("is"), $7); }
		| COMMENT ON CAST '(' Typename AS Typename ')' IS comment_text
			{ $$ = cat_str(6, make_str("comment on cast ("), $5, make_str("as"), $7, make_str(") is"), $10); }
		| COMMENT ON opt_procedural LANGUAGE any_name IS comment_text
			{ $$ = cat_str(6, make_str("comment on"), $3, make_str("language"), $5, make_str("is"), $7); }
		;

comment_type:  COLUMN		{ $$ = make_str("column"); }
		| DATABASE	{ $$ = make_str("database"); }
		| SCHEMA	{ $$ = make_str("schema"); }
		| INDEX		{ $$ = make_str("idnex"); }
		| SEQUENCE	{ $$ = make_str("sequence"); }
		| TABLE		{ $$ = make_str("table"); }
		| DOMAIN_P	{ $$ = make_str("domain"); }
		| TYPE_P	{ $$ = make_str("type"); }
		| VIEW		{ $$ = make_str("view"); }
		| CONVERSION_P	{ $$ = make_str("conversion"); }
		;

comment_text:	StringConst { $$ = $1; }
		| NULL_P			{ $$ = make_str("null"); }
	   	;

/*****************************************************************************
 *
 *		QUERY:
 * GRANT and REVOKE statements
 *
 *****************************************************************************/

GrantStmt:	GRANT privileges ON privilege_target TO grantee_list opt_grant_grant_option
			{ $$ = cat_str(7, make_str("grant"), $2, make_str("on"), $4, make_str("to"), $6, $7); }
		;

RevokeStmt:  REVOKE opt_revoke_grant_option privileges ON privilege_target FROM grantee_list opt_drop_behavior
			{
			  $$ = cat_str(9, make_str("revoke"), $2, $3, make_str("on"), $5, make_str("from"), $7, $8);
			}
			  
		;

privileges:  ALL PRIVILEGES		{ $$ = make_str("all privileges"); }
		| ALL					{ $$ = make_str("all"); }
		| privilege_list		{ $$ = $1; }
		;

privilege_list:  privilege
			{ $$ = $1; }
		| privilege_list ',' privilege
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

privilege:	SELECT			{ $$ = make_str("select"); }
		| INSERT			{ $$ = make_str("insert"); }
		| UPDATE			{ $$ = make_str("update"); }
		| DELETE_P			{ $$ = make_str("delete"); }
		| RULE				{ $$ = make_str("rule"); }
		| REFERENCES		{ $$ = make_str("references"); }
		| TRIGGER			{ $$ = make_str("trigger"); }
		| EXECUTE			{ $$ = make_str("execute"); }
		| USAGE				{ $$ = make_str("usage"); }
		| CREATE			{ $$ = make_str("create"); }
		| TEMPORARY			{ $$ = make_str("temporary"); }
		| TEMP				{ $$ = make_str("temp"); }
		;

privilege_target: qualified_name_list
			{ $$ = $1; }
		| TABLE qualified_name_list
			{ $$ = cat2_str(make_str("table"), $2); }
		| FUNCTION function_with_argtypes_list
			{ $$ = cat2_str(make_str("function"), $2); }
		| DATABASE name_list
			{ $$ = cat2_str(make_str("database"), $2); }
		| LANGUAGE name_list
			{ $$ = cat2_str(make_str("language") , $2); }
		| SCHEMA name_list
			{ $$ = cat2_str(make_str("schema") , $2); }
		| TABLESPACE name_list
			{ $$ = cat2_str(make_str("tablespace") , $2); }
		;

grantee_list: grantee
			{ $$ = $1; }
		| grantee_list ',' grantee
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

grantee:  ColId			{ $$ = $1; }
		| GROUP_P ColId		{ $$ = cat2_str(make_str("group"), $2); }
		;

opt_grant_grant_option:  WITH GRANT OPTION
		{
			mmerror(PARSE_ERROR, ET_WARNING, "Currently unsupported GRANT/WITH GRANT OPTION will be passed to backend");
			$$ = make_str("with grant option");
		}
		| /*EMPTY*/ 	{ $$ = EMPTY; }
		;

opt_revoke_grant_option: GRANT OPTION FOR
		{
			mmerror(PARSE_ERROR, ET_WARNING, "Currently unsupported REVOKE/GRANT OPTION FOR will be passed to backend");
			$$ = make_str("grant option for");
		}
		| /*EMPTY*/ 	{ $$ = EMPTY; }
		;

function_with_argtypes_list: function_with_argtypes
			{ $$ = $1; }
		| function_with_argtypes_list ',' function_with_argtypes
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

function_with_argtypes: func_name func_args { $$ = cat2_str($1, $2); };

/*****************************************************************************
 *
 *		QUERY:
 *				create index <indexname> on <relname>
 *				  [ using <access> ] "(" ( <col> | using <opclass> ] )+ ")"
 *				  [ tablespace <tablespacename> ] [ where <predicate> ]
 *
 *****************************************************************************/

IndexStmt:	CREATE index_opt_unique INDEX index_name ON qualified_name
				access_method_clause '(' index_params ')' OptTableSpace where_clause
			{ $$ = cat_str(12, make_str("create"), $2, make_str("index"), $4, make_str("on"), $6, $7, make_str("("), $9, make_str(")"), $11, $12); }
		;

index_opt_unique:  UNIQUE	{ $$ = make_str("unique"); }
		| /*EMPTY*/ 		{ $$ = EMPTY; }
		;

access_method_clause:  USING access_method
			{ $$ = cat2_str(make_str("using"), $2); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

index_params:  index_elem			{ $$ = $1; }
		| index_params ',' index_elem	{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

index_elem:  attr_name opt_class
		{ $$ = cat2_str($1, $2); }
	| func_name '(' expr_list ')' opt_class
		{ $$ = cat_str(5, $1, make_str("("), $3, ")", $5); }
	| '(' a_expr ')' opt_class
		{ $$ = cat_str(4, make_str("("), $2, make_str(")"), $4); }
	;

opt_class:	any_name 	{ $$ = $1; }
		| USING any_name	{ $$ = cat2_str(make_str("using"), $2); }
		| /*EMPTY*/		{ $$ = EMPTY; }
		;

CreateFunctionStmt:	CREATE opt_or_replace FUNCTION func_name func_args
					RETURNS func_return createfunc_opt_list opt_definition
			{ $$ = cat_str(8, make_str("create"), $2, make_str("function"), $4, $5, make_str("returns"), $7, $8); }
		;

opt_or_replace:  OR REPLACE		{ $$ = make_str("or replace"); }
		| /*EMPTY*/				{ $$ = EMPTY; }
		;

func_args:	'(' func_args_list ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		| '(' ')'
			{ $$ = make_str("()"); }
		;

func_args_list:  func_arg
			{ $$ = $1; }
		| func_args_list ',' func_arg
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

func_arg:  arg_class param_name func_type	{ $$ = cat_str(3, $1, $2, $3); }
		| arg_class func_type		{ $$ = cat2_str($1, $2); }
		;

arg_class:  IN_P	{ $$ = make_str("in"); }
		| OUT_P
		{
			mmerror(PARSE_ERROR, ET_WARNING, "Currently unsupported CREATE FUNCTION/OUT will be passed to backend");

			$$ = make_str("out");
		}
		| INOUT
		{
			mmerror(PARSE_ERROR, ET_WARNING, "Currently unsupported CREATE FUNCTION/INOUT will be passed to backend");

			$$ = make_str("inout");
		}
		| /*EMPTY*/
		{ $$ = EMPTY; }
		;

func_as: StringConst
			{ $$ = $1; }
		| StringConst ',' StringConst
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

param_name:    function_name	{ $$ = $1; };

func_return:  func_type
		{
			/* We can catch over-specified arguments here if we want to,
			 * but for now better to silently swallow typmod, etc.
			 * - thomas 2000-03-22
			 */
			$$ = $1;
		}
		;

func_type:	Typename
			{ $$ = $1; }
		| type_name attrs '%' TYPE_P
			{ $$ = cat_str(3, $1, $2, make_str("% type")); }
		;


createfunc_opt_list: createfunc_opt_item
			{ $$ = $1; }
		| createfunc_opt_list createfunc_opt_item
			{ $$ = cat2_str($1, $2); }
		;

createfunc_opt_item: AS func_as
				{ $$ = cat2_str(make_str("as"), $2); }
		| LANGUAGE ColId_or_Sconst
				{ $$ = cat2_str(make_str("language"), $2); }
		| IMMUTABLE
				{ $$ = make_str("immutable"); }
		| STABLE
				{ $$ = make_str("stable"); }
		| VOLATILE
				{ $$ = make_str("volatile"); }
		| CALLED ON NULL_P INPUT_P
				{ $$ = make_str("called on null input"); }
		| RETURNS NULL_P ON NULL_P INPUT_P
				{ $$ = make_str("returns null on null input"); }
		| STRICT_P
				{ $$ = make_str("strict"); }
		| EXTERNAL SECURITY DEFINER
				{ $$ = make_str("external security definer"); }
		| EXTERNAL SECURITY INVOKER
				{ $$ = make_str("external security invoker"); }
		| SECURITY DEFINER
				{ $$ = make_str("security definer"); }
		| SECURITY INVOKER
				{ $$ = make_str("security invoker"); }
		;

opt_definition: WITH definition	{ $$ = cat2_str(make_str("with"), $2); }
                | /*EMPTY*/     { $$ = EMPTY; }
	        ;

/*****************************************************************************
 *
 *		QUERY:
 *
 *			   DROP FUNCTION funcname (arg1, arg2, ...)
 *			   DROP AGGREGATE aggname (aggtype)
 *			   DROP OPERATOR opname (leftoperand_typ rightoperand_typ)
 *
 *****************************************************************************/

RemoveFuncStmt:  DROP FUNCTION func_name func_args opt_drop_behavior
			{ $$ = cat_str(4, make_str("drop function"), $3, $4, $5); }
		;

RemoveAggrStmt:  DROP AGGREGATE func_name '(' aggr_argtype ')' opt_drop_behavior
			{ $$ = cat_str(6, make_str("drop aggregate"), $3, make_str("("), $5, make_str(")"), $7); }
		;

aggr_argtype:  Typename		{ $$ = $1; }
		| '*'				{ $$ = make_str("*"); }
		;


RemoveOperStmt:  DROP OPERATOR all_Op '(' oper_argtypes ')' opt_drop_behavior
			{ $$ = cat_str(6, make_str("drop operator"), $3, make_str("("), $5, make_str(")"), $7); }
		;

oper_argtypes:	Typename
			{ mmerror(PARSE_ERROR, ET_ERROR, "parser: argument type missing (use NONE for unary operators)"); }
		| Typename ',' Typename
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		| NONE ',' Typename			/* left unary */
			{ $$ = cat2_str(make_str("none,"), $3); }
		| Typename ',' NONE			/* right unary */
			{ $$ = cat2_str($1, make_str(", none")); }
		;

any_operator:
                        all_Op
				{ $$ = $1; }
			| ColId '.' any_operator
				{ $$ = cat_str(3, $1, make_str("."), $3); }
			;

CreateCastStmt:		CREATE CAST '(' Typename AS Typename ')'
				WITH FUNCTION function_with_argtypes cast_context
			{ $$ = cat_str(6, make_str("create cast ("), $4, make_str("as"), $6, make_str(") with function"), $10); }
			| CREATE CAST '(' Typename AS Typename ')'
				WITHOUT FUNCTION cast_context
			{ $$ = cat_str(6, make_str("create cast ("), $4, make_str("as"), $6, make_str(") without function"), $10); }
		;

cast_context: AS ASSIGNMENT   { $$ = make_str("as assignment"); }
		| /*EMPTY*/	{ $$ = EMPTY; }
		;


DropCastStmt: DROP CAST '(' Typename AS Typename ')' opt_drop_behavior
			{ $$ = cat_str(6, make_str("drop cast ("), $4, make_str("as"), $6, make_str(")"), $8); }
		;

/*****************************************************************************
 *
 *				QUERY:
 *
 *				REINDEX type <typename> [FORCE] [ALL]
 *
 *****************************************************************************/
ReindexStmt:  REINDEX reindex_type qualified_name opt_force
			{ $$ = cat_str(4, make_str("reindex"), $2, $3, $4); }
		| REINDEX DATABASE name opt_force
			{ $$ = cat_str(3, make_str("reindex database"), $3, $4); }
		;

reindex_type:	INDEX		{ $$ = make_str("index"); }
		| TABLE		{ $$ = make_str("table"); }
		;

opt_force: FORCE			{ $$ = make_str("force"); }
		| /* EMPTY */		{ $$ = EMPTY; }
		;

/*****************************************************************************
 *
 *		QUERY:
 *				rename <attrname1> in <relname> [*] to <attrname2>
 *				rename <relname1> to <relname2>
 *
 *****************************************************************************/

RenameStmt:  ALTER AGGREGATE func_name '(' aggr_argtype ')' RENAME TO name
			{ $$ = cat_str(6, make_str("alter aggregate"), $3, make_str("("), $5, make_str(") rename to"), $9); }
	| ALTER CONVERSION_P any_name RENAME TO name
			{ $$ = cat_str(4, make_str("alter conversion"), $3, make_str("rename to"), $6); }
	| ALTER DATABASE database_name RENAME TO database_name
			{ $$ = cat_str(4, make_str("alter database"), $3, make_str("rename to"), $6); }
	| ALTER FUNCTION func_name func_args RENAME TO name
			{ $$ = cat_str(5, make_str("alter function"), $3, $4, make_str("rename to"), $7); }
	| ALTER GROUP_P UserId RENAME TO UserId
			{ $$ = cat_str(4, make_str("alter group"), $3, make_str("rename to"), $6); }
	| ALTER LANGUAGE name RENAME TO name
			{ $$ = cat_str(4, make_str("alter language"), $3, make_str("rename to"), $6); }
	| ALTER OPERATOR CLASS any_name USING access_method RENAME TO name
			{ $$ = cat_str(6, make_str("alter operator class"), $4, make_str("using"), $6, make_str("rename to"), $9); }
	| ALTER SCHEMA name RENAME TO name
			{ $$ = cat_str(4, make_str("alter schema"), $3, make_str("rename to"), $6); }
	| ALTER TABLE relation_expr RENAME TO name
			{ $$ = cat_str(4, make_str("alter table"), $3, make_str("rename to"), $6); }
	| ALTER TABLE relation_expr RENAME opt_column name TO name
			{ $$ = cat_str(7, make_str("alter table"), $3, make_str("rename"), $5, $6, make_str("to"), $8); }
	| ALTER TRIGGER name ON relation_expr RENAME TO name
			{ $$ = cat_str(6, make_str("alter trigger"), $3, make_str("on"), $5, make_str("rename to"), $8); }
	| ALTER USER UserId RENAME TO UserId
			{ $$ = cat_str(4, make_str("alter user"), $3, make_str("rename to"), $6); }
	| ALTER TABLESPACE name RENAME TO name
			{ $$ = cat_str(4, make_str("alter tablespace"), $3, make_str("rename to"), $6); }
		;

opt_column:  COLUMN			{ $$ = make_str("column"); }
		| /*EMPTY*/			{ $$ = EMPTY; }
		;

/*****************************************************************************
 *
 * ALTER THING name OWNER TO newname.
 *
 *****************************************************************************/

AlterOwnerStmt: ALTER AGGREGATE func_name '(' aggr_argtype ')' OWNER TO UserId
			{ $$ = cat_str(6, make_str("alter aggregate"), $3, make_str("("), $5, make_str(") owner to"), $9); }
		| ALTER CONVERSION_P any_name OWNER TO UserId
			{ $$ = cat_str(4, make_str("alter conversion"), $3, make_str("owner to"), $6); }
		| ALTER DATABASE database_name OWNER TO UserId
			{ $$ = cat_str(4, make_str("alter database"), $3, make_str("owner to"), $6); }
		| ALTER DOMAIN_P database_name OWNER TO UserId
			{ $$ = cat_str(4, make_str("alter domain"), $3, make_str("owner to"), $6); }
		| ALTER FUNCTION func_name func_args OWNER TO UserId
			{ $$ = cat_str(5, make_str("alter function"), $3, $4, make_str("owner to"), $7); }
		| ALTER OPERATOR any_operator '(' oper_argtypes ')' OWNER TO UserId
			{ $$ = cat_str(6, make_str("alter operator"), $3, make_str("("), $5, make_str(") owner to"), $9); }
		| ALTER OPERATOR CLASS any_name USING access_method OWNER TO UserId
			{ $$ = cat_str(6, make_str("alter operator class"), $4, make_str("using"), $6, make_str("owner to"), $9); }
		| ALTER SCHEMA name OWNER TO UserId
			{ $$ = cat_str(4, make_str("alter schema"), $3, make_str("owner to"), $6); }
		| ALTER TYPE_P any_name OWNER TO UserId
			{ $$ = cat_str(4, make_str("alter type"), $3, make_str("owner to"), $6); }
		| ALTER TABLESPACE name OWNER TO UserId
			{ $$ = cat_str(4, make_str("alter tablespace"), $3, make_str("owner to"), $6); }
		;


/*****************************************************************************
 *
 *		QUERY:	Define Rewrite Rule
 *
 *****************************************************************************/

RuleStmt:  CREATE opt_or_replace RULE name AS
		   { QueryIsRule=1; }
		   ON event TO qualified_name where_clause
		   DO opt_instead RuleActionList
		{
			QueryIsRule=0;
			$$ = cat_str(12, make_str("create"), $2, make_str("rule"), $4, make_str("as on"), $8, make_str("to"), $10, $11, make_str("do"), $13, $14);
		}
		;

RuleActionList:  NOTHING				{ $$ = make_str("nothing"); }
		| RuleActionStmt				{ $$ = $1; }
		| '(' RuleActionMulti ')'		{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
				;

/* the thrashing around here is to discard "empty" statements... */
RuleActionMulti:  RuleActionMulti ';' RuleActionStmtOrEmpty
			{  $$ = cat_str(3, $1, make_str(";"), $3); }
		| RuleActionStmtOrEmpty
			{ $$ = cat2_str($1, make_str(";")); }
		;

RuleActionStmt:   SelectStmt
		| InsertStmt
		| UpdateStmt
		| DeleteStmt
		| NotifyStmt
		;

RuleActionStmtOrEmpty: RuleActionStmt	{ $$ = $1; }
	   | /*EMPTY*/						{ $$ = EMPTY; }
	   ;

/* change me to select, update, etc. some day */
event:	SELECT				{ $$ = make_str("select"); }
		| UPDATE			{ $$ = make_str("update"); }
		| DELETE_P			{ $$ = make_str("delete"); }
		| INSERT			{ $$ = make_str("insert"); }
		 ;

opt_instead:  INSTEAD		{ $$ = make_str("instead"); }
		| ALSO		{ $$ = make_str("also"); }
		| /*EMPTY*/			{ $$ = EMPTY; }
		;

DropRuleStmt:  DROP RULE name ON qualified_name opt_drop_behavior
		{ $$ = cat_str(5, make_str("drop rule"), $3, make_str("on"), $5, $6);}
		;

/*****************************************************************************
 *
 *		QUERY:
 *				NOTIFY <qualified_name>	can appear both in rule bodies and
 *				as a query-level command
 *
 *****************************************************************************/

NotifyStmt:  NOTIFY qualified_name
		{ $$ = cat2_str(make_str("notify"), $2); }
		;

ListenStmt:  LISTEN qualified_name
		{ $$ = cat2_str(make_str("listen"), $2); }
		;

UnlistenStmt:  UNLISTEN qualified_name
			{ $$ = cat2_str(make_str("unlisten"), $2); }
		| UNLISTEN '*'
			{ $$ = make_str("unlisten *"); }
		;


/*****************************************************************************
 *
 *				Transactions:
 *
 *	  BEGIN / COMMIT / ROLLBACK
 *		(also older versions END / ABORT)
 *
 *****************************************************************************/
TransactionStmt:  ABORT_P opt_transaction		{ $$ = make_str("rollback"); }
		| BEGIN_P opt_transaction transaction_mode_list_or_empty { $$ = cat2_str(make_str("begin transaction"), $3); }
		| START TRANSACTION transaction_mode_list_or_empty	 { $$ = cat2_str(make_str("start transaction"), $3); }
		| COMMIT opt_transaction		{ $$ = make_str("commit"); }
		| END_P opt_transaction		{ $$ = make_str("commit"); }
		| ROLLBACK opt_transaction		{ $$ = make_str("rollback"); }
		;

opt_transaction: WORK			{ $$ = EMPTY; }
		| TRANSACTION	{ $$ = EMPTY; }
		| /*EMPTY*/		{ $$ = EMPTY; }
		;

transaction_mode_list:
	ISOLATION LEVEL iso_level
	{ $$ = cat2_str(make_str("isolation level"), $3); }
	| transaction_access_mode
	{ $$ = $1; }
	| ISOLATION LEVEL iso_level transaction_access_mode
	{ $$ = cat_str(3, make_str("isolation level"), $3, $4); }
	| transaction_access_mode ISOLATION LEVEL iso_level
	{ $$ = cat_str(3, $1, make_str("isolation level"), $4); }
	;
	 
transaction_mode_list_or_empty:
	transaction_mode_list	{ $$ = $1; }
	| /* EMPTY */		{ $$ = EMPTY; }
	;

transaction_access_mode:
	READ ONLY	{ $$ = make_str("read only"); }
	| READ WRITE 	{ $$ = make_str("read write"); }
	;
	
/*****************************************************************************
 *
 *		QUERY:
 *				define view <viewname> '('target-list ')' [where <quals> ]
 *
 *****************************************************************************/

ViewStmt:  CREATE opt_or_replace VIEW qualified_name opt_column_list AS SelectStmt
			{ $$ = cat_str(7, make_str("create"), $2, make_str("view"), $4, $5, make_str("as"), $7); }
		;


/*****************************************************************************
 *
 *		QUERY:
 *				load make_str("filename")
 *
 *****************************************************************************/

LoadStmt:  LOAD file_name
			{ $$ = cat2_str(make_str("load"), $2); }
		;


/*****************************************************************************
 *
 *		CREATE DATABASE
 *
 *
 *****************************************************************************/

CreatedbStmt:  CREATE DATABASE database_name WITH createdb_opt_list
			{ $$ = cat_str(4, make_str("create database"), $3, make_str("with"), $5); }
		| CREATE DATABASE database_name
			{ $$ = cat2_str(make_str("create database"), $3); }
		;

createdb_opt_list:	createdb_opt_item
			{ $$ = $1; }
		| createdb_opt_list createdb_opt_item
			{ $$ = cat2_str($1, $2); }
		;

createdb_opt_item:	TABLESPACE opt_equal name
			{ $$ = cat_str(3,make_str("tablespace"), $2, $3); }
		| TABLESPACE opt_equal DEFAULT
			{ $$ = cat_str(3, make_str("tablespace"), $2, make_str("default")); }
		| LOCATION opt_equal StringConst
			{ $$ = cat_str(3,make_str("location"), $2, $3); }
		| LOCATION opt_equal DEFAULT
			{ $$ = cat_str(3, make_str("location"), $2, make_str("default")); }
		| TEMPLATE opt_equal name
			{ $$ = cat_str(3, make_str("template"), $2, $3); }
		| TEMPLATE opt_equal DEFAULT
			{ $$ = cat_str(3, make_str("template"), $2, make_str("default")); }
		| ENCODING opt_equal PosIntStringConst
			{ $$ = cat_str(3, make_str("encoding"), $2, $3); }
		| ENCODING opt_equal DEFAULT
			{ $$ = cat_str(3, make_str("encoding"), $2, make_str("default")); }
		| OWNER opt_equal name
			{ $$ = cat_str(3, make_str("owner"), $2, $3); }
		| OWNER opt_equal DEFAULT
			{ $$ = cat_str(3, make_str("owner"), $2, make_str("default")); }
		;

opt_equal: '='					{ $$ = make_str("="); }
		| /* EMPTY */			{ $$ = EMPTY; }
		;


/*****************************************************************************
 *
 *				ALTER DATABASE
 *
 *
 *****************************************************************************/

AlterDatabaseSetStmt: ALTER DATABASE database_name SET set_rest
			{ $$ = cat_str(4, make_str("alter database"), $3, make_str("set"), $5); }
		| ALTER DATABASE database_name VariableResetStmt
			{ $$ = cat_str(3, make_str("alter database"), $3, $4); }
		;

/*****************************************************************************
 *
 *		DROP DATABASE
 *
 *
 *****************************************************************************/

DropdbStmt: DROP DATABASE database_name
			{ $$ = cat2_str(make_str("drop database"), $3); }
		;


/*****************************************************************************
 *
 * Manipulate a domain
 *
 *****************************************************************************/

CreateDomainStmt:  CREATE DOMAIN_P any_name opt_as Typename ColQualList
			{
				$$ = cat_str(55555, make_str("create domain"), $3, $4, $5, $6);
 			}
		;

AlterDomainStmt:
	ALTER DOMAIN_P any_name alter_column_default
		{ $$ = cat_str(3, make_str("alter domain"), $3, $4); }
	| ALTER DOMAIN_P any_name DROP NOT NULL_P
		{ $$ = cat_str(3, make_str("alter domain"), $3, make_str("drop not null")); }
	| ALTER DOMAIN_P any_name SET NOT NULL_P
		{ $$ = cat_str(3, make_str("alter domain"), $3, make_str("set not null")); }
	| ALTER DOMAIN_P any_name ADD TableConstraint
		{ $$ = cat_str(4, make_str("alter domain"), $3, make_str("add"), $5); }
	| ALTER DOMAIN_P any_name DROP CONSTRAINT name opt_drop_behavior
		{ $$ = cat_str(5, make_str("alter domain"), $3, make_str("drop constraint"), $6, $7); }
	;
	
opt_as:	AS	{$$ = make_str("as"); }
	| /* EMPTY */	{$$ = EMPTY; }
	;

CreateConversionStmt:
                       CREATE opt_default CONVERSION_P any_name FOR StringConst
                       TO StringConst FROM any_name
		       { $$ = cat_str(10, make_str("create"), $2, make_str("conversion"), $4, make_str("for"), $6, make_str("to"), $8, make_str("from"), $10); }
		       ;

/*****************************************************************************
 *
 *		QUERY:
 *			       cluster <index_name> on <qualified_name>
 *                             cluster <qualified_name>
 *                             cluster
 *
 *****************************************************************************/

ClusterStmt:  CLUSTER index_name ON qualified_name
			{ $$ = cat_str(4, make_str("cluster"), $2, make_str("on"), $4); }
	| CLUSTER qualified_name
			{ $$ = cat2_str(make_str("cluster"), $2); }
	| CLUSTER
			{ $$ = make_str("cluster"); }
	;


/*****************************************************************************
 *
 *		QUERY:
 *				vacuum
 *				analyze
 *
 *****************************************************************************/

VacuumStmt:  VACUUM opt_full opt_freeze opt_verbose
			{ $$ = cat_str(4, make_str("vacuum"), $2, $3, $4); }
		| VACUUM opt_full opt_freeze opt_verbose qualified_name
			{ $$ = cat_str(5, make_str("vacuum"), $2, $3, $4, $5); }
		| VACUUM opt_full opt_freeze opt_verbose AnalyzeStmt
			{ $$ = cat_str(5, make_str("vacuum"), $2, $3, $4, $5); }
		;

AnalyzeStmt:  analyze_keyword opt_verbose
			{ $$ = cat_str(2, $1, $2); }
		| analyze_keyword opt_verbose qualified_name opt_name_list
			{ $$ = cat_str(4, $1, $2, $3, $4); }
		;

analyze_keyword:  ANALYZE		{ $$ = make_str("analyze"); }
		| ANALYSE				{ $$ = make_str("analyse"); }
		;

opt_verbose:  VERBOSE			{ $$ = make_str("verbose"); }
		| /*EMPTY*/				{ $$ = EMPTY; }
		;

opt_full:  FULL					{ $$ = make_str("full"); }
		| /*EMPTY*/				{ $$ = EMPTY; }
		;

opt_freeze:  FREEZE				{ $$ = make_str("freeze"); }
		| /*EMPTY*/				{ $$ = EMPTY; }
		;

opt_name_list:	'(' name_list ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;


/*****************************************************************************
 *
 *		QUERY:
 *				EXPLAIN query
 *
 *****************************************************************************/

ExplainStmt:  EXPLAIN opt_analyze opt_verbose ExplainableStmt
			{ $$ = cat_str(4, make_str("explain"), $2, $3, $4); }
		;

ExplainableStmt:
		SelectStmt
		| InsertStmt
                | UpdateStmt
		| DeleteStmt
		| DeclareCursorStmt
		/* | ExecuteStmt */
		;												
opt_analyze:
	analyze_keyword                 { $$ = $1; }
	| /* EMPTY */			{ $$ = EMPTY; }
	;

/*

conflicts with ecpg

PrepareStmt: PREPARE name prep_type_clause AS PreparableStmt
		{ $$ = cat_str(5, make_str("prepare"), $2, $3, make_str("as"), $5); }
		;

PreparableStmt:
                       SelectStmt
                       | InsertStmt
                       | UpdateStmt
                       | DeleteStmt
               ;

prep_type_clause: '(' prep_type_list ')'	{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
			| /* EMPTY * /		{ $$ = EMPTY; }
			;

prep_type_list: Typename		{ $$ = $1; }
	| prep_type_list ',' Typename	{ $$ = cat_str(3, $1, make_str(","), $3); }
	;

ExecuteStmt: EXECUTE name execute_param_clause
		{ $$ = cat_str(3, make_str("execute"), $2, $3); }
		| CREATE OptTemp TABLE qualified_name OptCreateAs AS EXECUTE name execute_param_clause
		{ $$ = cat_str(8, make_str("create"), $2, make_str("table"), $4, $5, make_str("as execute"), $8, $9); }
		
		;

execute_param_clause: '(' expr_list ')'	{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
			| /* EMPTY * /		{ $$ = EMPTY; }
			;

DeallocateStmt: DEALLOCATE name		{ $$ = cat2_str(make_str("deallocate"), $2); }
	| DEALLOCATE PREPARE name	{ $$ = cat2_str(make_str("deallocate prepare"), $3); }
	;
*/

/*****************************************************************************
 *
 *		QUERY:
 *				INSERT STATEMENTS
 *
 *****************************************************************************/

InsertStmt:  INSERT INTO qualified_name insert_rest
			{ $$ = cat_str(3, make_str("insert into"), $3, $4); }
		;

insert_rest:  VALUES '(' insert_target_list ')'
			{ $$ = cat_str(3, make_str("values("), $3, make_str(")")); }
		| DEFAULT VALUES
			{ $$ = make_str("default values"); }
		| SelectStmt
			{ $$ = $1; }
		| '(' insert_column_list ')' VALUES '(' insert_target_list ')'
			{ $$ = cat_str(5, make_str("("), $2, make_str(") values ("), $6, make_str(")")); }
		| '(' insert_column_list ')' SelectStmt
			{ $$ = cat_str(4, make_str("("), $2, make_str(")"), $4); }
		;

insert_column_list: insert_column_list ',' insert_column_item
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		| insert_column_item
			{ $$ = $1; }
		;

insert_column_item:  ColId opt_indirection
			{ $$ = cat2_str($1, $2); }
		;


/*****************************************************************************
 *
 *		QUERY:
 *				DELETE STATEMENTS
 *
 *****************************************************************************/

DeleteStmt:  DELETE_P FROM relation_expr where_clause
			{ $$ = cat_str(3, make_str("delete from"), $3, $4); }
		;

LockStmt:  LOCK_P opt_table qualified_name_list opt_lock opt_nowait
			{ $$ = cat_str(5, make_str("lock"), $2, $3, $4, $5); }
		;

opt_lock:  IN_P lock_type MODE
			{ $$ = cat_str(3, make_str("in"), $2, make_str("mode")); }
		| /*EMPTY*/
			{ $$ = EMPTY;}
		;

lock_type:	ACCESS SHARE		{ $$ = make_str("access share"); }
		| ROW SHARE				{ $$ = make_str("access share"); }
		| ROW EXCLUSIVE			{ $$ = make_str("row exclusive"); }
		| SHARE UPDATE EXCLUSIVE { $$ = make_str("share update exclusive"); }
		| SHARE					{ $$ = make_str("share"); }
		| SHARE ROW EXCLUSIVE	{ $$ = make_str("share row exclusive"); }
		| EXCLUSIVE				{ $$ = make_str("exclusive"); }
		| ACCESS EXCLUSIVE		{ $$ = make_str("access exclusive"); }
		;

opt_nowait:    NOWAIT                   { $$ = make_str("nowait"); }
		| /* EMPTY */		{ $$ = EMPTY; }
		;

/*****************************************************************************
 *
 *		QUERY:
 *				UpdateStmt (UPDATE)
 *
 *****************************************************************************/

UpdateStmt:  UPDATE relation_expr
				SET update_target_list
				from_clause
				where_clause
			{$$ = cat_str(6, make_str("update"), $2, make_str("set"), $4, $5, $6); }
		;


/*****************************************************************************
 *
 *		QUERY:
 *				CURSOR STATEMENTS
 *
 *****************************************************************************/
DeclareCursorStmt:  DECLARE name cursor_options CURSOR opt_hold FOR SelectStmt
		{
			struct cursor *ptr, *this;

			for (ptr = cur; ptr != NULL; ptr = ptr->next)
			{
				if (strcmp($2, ptr->name) == 0)
					/* re-definition is a bug */
					mmerror(PARSE_ERROR, ET_ERROR, "cursor %s already defined", $2);
			}

			this = (struct cursor *) mm_alloc(sizeof(struct cursor));

			/* initial definition */
			this->next = cur;
			this->name = $2;
			this->connection = connection;
			this->opened = false;
			this->command =  cat_str(7, make_str("declare"), mm_strdup($2), $3, make_str("cursor"), $5, make_str("for"), $7);
			this->argsinsert = argsinsert;
			this->argsresult = argsresult;
			argsinsert = argsresult = NULL;
			cur = this;

			if (INFORMIX_MODE)
				$$ = cat_str(5, adjust_informix(this->argsinsert), adjust_informix(this->argsresult), make_str("/*"), mm_strdup(this->command), make_str("*/"));
			else
				$$ = cat_str(3, make_str("/*"), mm_strdup(this->command), make_str("*/"));
		}
		;

cursor_options:  /* EMPTY */		{ $$ = EMPTY; }
	| cursor_options BINARY		{ $$ = cat2_str($1, make_str("binary")); }
   	| cursor_options INSENSITIVE	{ $$ = cat2_str($1, make_str("insensitive")); }
   	| cursor_options SCROLL		{ $$ = cat2_str($1, make_str("scroll")); }
   	| cursor_options NO SCROLL	{ $$ = cat2_str($1, make_str("no scroll")); }
	;

opt_hold:	/* EMPTY */		{ if (compat == ECPG_COMPAT_INFORMIX_SE && autocommit == true)
						$$ = make_str("with hold");
					  else
						 $$ = EMPTY; }
	| WITH HOLD			{ $$ = make_str("with hold"); }
	| WITHOUT HOLD			{ $$ = make_str("without hold"); }
	;
	
/*****************************************************************************
 *
 *		QUERY:
 *				SELECT STATEMENTS
 *
 *****************************************************************************/

SelectStmt: select_no_parens		%prec UMINUS
			{ $$ = $1; }
		|	select_with_parens		%prec UMINUS
			{ $$ = $1; }
		;

select_with_parens: '(' select_no_parens ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		| '(' select_with_parens ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		;

select_no_parens:	   simple_select
			{ $$ = $1; }
		| select_clause sort_clause
			{ $$ = cat2_str($1, $2); }
		| select_clause opt_sort_clause for_update_clause opt_select_limit
			{ $$ = cat_str(4, $1, $2, $3, $4); }
		| select_clause opt_sort_clause select_limit opt_for_update_clause
			{ $$ = cat_str(4, $1, $2, $3, $4); }
		;

select_clause: simple_select		{ $$ = $1; }
		| select_with_parens		{ $$ = $1; }
		;

simple_select:	SELECT opt_distinct target_list
					into_clause from_clause where_clause
					group_clause having_clause
			{ $$ = cat_str(8, make_str("select"), $2, $3, $4, $5, $6, $7, $8); }
		| select_clause UNION opt_all select_clause
			{ $$ = cat_str(4, $1, make_str("union"), $3, $4); }
		| select_clause INTERSECT opt_all select_clause
			{ $$ = cat_str(4, $1, make_str("intersect"), $3, $4); }
		| select_clause EXCEPT opt_all select_clause
			{ $$ = cat_str(4, $1, make_str("except"), $3, $4); }
		;

into_clause:  INTO OptTempTableName
		{
			FoundInto = 1;
			$$= cat2_str(make_str("into"), $2);
		}
		| ecpg_into			{ $$ = EMPTY; }
		| /*EMPTY*/			{ $$ = EMPTY; }
		;

/*
 * Redundancy here is needed to avoid shift/reduce conflicts,
 * since TEMP is not a reserved word.  See also OptTemp.
 *
 * The result is a cons cell (not a true list!) containing
 * a boolean and a table name.
 */
OptTempTableName:  TEMPORARY opt_table qualified_name
			{ $$ = cat_str(3, make_str("temporary"), $2, $3); }
		| TEMP opt_table qualified_name
			{ $$ = cat_str(3, make_str("temp"), $2, $3); }
		| LOCAL TEMPORARY opt_table qualified_name
			{ $$ = cat_str(3, make_str("local temporary"), $3, $4); }
		| LOCAL TEMP opt_table qualified_name
			{ $$ = cat_str(3, make_str("local temp"), $3, $4); }
		| GLOBAL TEMPORARY opt_table qualified_name
			{ $$ = cat_str(3, make_str("global temporary"), $3, $4); }
		| GLOBAL TEMP opt_table qualified_name
			{ $$ = cat_str(3, make_str("global temp"), $3, $4); }
		| TABLE qualified_name
			{ $$ = cat2_str(make_str("table"), $2); }
		| qualified_name
			{ $$ = $1; }
		;

opt_table:	TABLE				{ $$ = make_str("table"); }
		| /*EMPTY*/				{ $$ = EMPTY; }
		;

opt_all:  ALL					{ $$ = make_str("all"); }
		| /*EMPTY*/				{ $$ = EMPTY; }
		;

opt_distinct:  DISTINCT
			{ $$ = make_str("distinct"); }
		| DISTINCT ON '(' expr_list ')'
			{ $$ = cat_str(3, make_str("distinct on ("), $4, make_str(")")); }
		| ALL
			{ $$ = make_str("all"); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

opt_sort_clause:	sort_clause	{ $$ = $1; }
		| /* EMPTY */		{ $$ = EMPTY; }
		;

sort_clause:  ORDER BY sortby_list
			{ $$ = cat2_str(make_str("order by"), $3); }
		;

sortby_list:  sortby					{ $$ = $1; }
		| sortby_list ',' sortby		{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

sortby: a_expr USING qual_all_Op
			{ $$ = cat_str(3, $1, make_str("using"), $3); }
		| a_expr ASC
			{ $$ = cat2_str($1, make_str("asc")); }
		| a_expr DESC
			{ $$ = cat2_str($1, make_str("desc")); }
		| a_expr
			{ $$ = $1; }
		;

select_limit:	LIMIT select_limit_value OFFSET select_offset_value
		   { $$ = cat_str(4, make_str("limit"), $2, make_str("offset"), $4); }
		| OFFSET select_offset_value LIMIT select_limit_value
		   { $$ = cat_str(4, make_str("offset"), $2, make_str("limit"), $4); }
		| LIMIT select_limit_value
		   { $$ = cat2_str(make_str("limit"), $2); }
		| OFFSET select_offset_value
		   { $$ = cat2_str(make_str("offset"), $2); }
		| LIMIT select_limit_value ',' select_offset_value
		   { mmerror(PARSE_ERROR, ET_WARNING, "No longer supported LIMIT #,# syntax passed to backend."); }
		;

opt_select_limit:	select_limit	{ $$ = $1; }
		| /*EMPTY*/					{ $$ = EMPTY; }
		;

select_limit_value: a_expr 	{ $$ = $1; }
		| ALL		{ $$ = make_str("all"); }
		;

select_offset_value: a_expr { $$ = $1; }	
		;

/*
 *	jimmy bell-style recursive queries aren't supported in the
 *	current system.
 *
 *	...however, recursive addattr and rename supported.  make special
 *	cases for these.
 */
group_clause:  GROUP_P BY expr_list
			{ $$ = cat2_str(make_str("group by"), $3); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

having_clause:	HAVING a_expr
			{ $$ = cat2_str(make_str("having"), $2); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

for_update_clause:	FOR UPDATE update_list
			{ $$ = make_str("for update"); }
		| FOR READ ONLY
			{ $$ = make_str("for read only"); }
		;

opt_for_update_clause: for_update_clause	{ $$ = $1; }
		| /* EMPTY */						{ $$ = EMPTY; }
		;

update_list:  OF name_list		{ $$ = cat2_str(make_str("of"), $2); }
		| /* EMPTY */			{ $$ = EMPTY; }
		;

/*****************************************************************************
 *
 *	clauses common to all Optimizable Stmts:
 *		from_clause - allow list of both JOIN expressions and table names
 *		where_clause	- qualifications for joins or restrictions
 *
 *****************************************************************************/

from_clause:	FROM from_list		{ $$ = cat2_str(make_str("from"), $2); }
		| /* EMPTY */				{ $$ = EMPTY; }
		;

from_list:	from_list ',' table_ref { $$ = cat_str(3, $1, make_str(","), $3); }
		| table_ref					{ $$ = $1; }
		;

/*
 * table_ref is where an alias clause can be attached.	Note we cannot make
 * alias_clause have an empty production because that causes parse conflicts
 * between table_ref := '(' joined_table ')' alias_clause
 * and joined_table := '(' joined_table ')'.  So, we must have the
 * redundant-looking productions here instead.
 */
table_ref:	relation_expr
			{ $$ = $1; }
		| relation_expr alias_clause
			{ $$= cat2_str($1, $2); }
		| func_table
			{ $$ = $1; }
		| func_table alias_clause
		        { $$= cat2_str($1, $2); }
		| func_table AS '(' TableFuncElementList ')'
			{ $$=cat_str(4, $1, make_str("as ("), $4, make_str(")")); }
		| func_table AS ColId '(' TableFuncElementList ')'
			{ $$=cat_str(6, $1, make_str("as"), $3, make_str("("), $5, make_str(")"));}
		| func_table ColId '(' TableFuncElementList ')'
			{ $$=cat_str(5, $1, $2, make_str("("), $4, make_str(")")); }
		| select_with_parens
			{mmerror(PARSE_ERROR, ET_ERROR, "sub-SELECT in FROM must have an alias");}
		| select_with_parens alias_clause
			{ $$=cat2_str($1, $2); }
		| joined_table
			{ $$ = $1; }
		| '(' joined_table ')' alias_clause
			{ $$=cat_str(4, make_str("("), $2, make_str(")"), $4); }
		;

/*
 * It may seem silly to separate joined_table from table_ref, but there is
 * method in SQL92's madness: if you don't do it this way you get reduce-
 * reduce conflicts, because it's not clear to the parser generator whether
 * to expect alias_clause after ')' or not.  For the same reason we must
 * treat 'JOIN' and 'join_type JOIN' separately, rather than allowing
 * join_type to expand to empty; if we try it, the parser generator can't
 * figure out when to reduce an empty join_type right after table_ref.
 *
 * Note that a CROSS JOIN is the same as an unqualified
 * INNER JOIN, and an INNER JOIN/ON has the same shape
 * but a qualification expression to limit membership.
 * A NATURAL JOIN implicitly matches column names between
 * tables and the shape is determined by which columns are
 * in common. We'll collect columns during the later transformations.
 */

joined_table:  '(' joined_table ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		| table_ref CROSS JOIN table_ref
			{ $$ = cat_str(3, $1, make_str("cross join"), $4); }
		| table_ref UNIONJOIN table_ref
			{ $$ = cat_str(3, $1, make_str("unionjoin"), $3); }
		| table_ref join_type JOIN table_ref join_qual
			{ $$ = cat_str(5, $1, $2, make_str("join"), $4, $5); }
		| table_ref JOIN table_ref join_qual
			{ $$ = cat_str(4, $1, make_str("join"), $3, $4); }
		| table_ref NATURAL join_type JOIN table_ref
			{ $$ = cat_str(5, $1, make_str("natural"), $3, make_str("join"), $5); }
		| table_ref NATURAL JOIN table_ref
			{ $$ = cat_str(3, $1, make_str("natural join"), $4); }
		;

alias_clause:  AS ColId '(' name_list ')'
			{ $$ = cat_str(5, make_str("as"), $2, make_str("("), $4, make_str(")")); }
		| AS ColId
			{ $$ = cat2_str(make_str("as"), $2); }
		| ColId '(' name_list ')'
			{ $$ = cat_str(4, $1, make_str("("), $3, make_str(")")); }
		| ColId
			{ $$ = $1; }
		;

join_type:	FULL join_outer		{ $$ = cat2_str(make_str("full"), $2); }
		| LEFT join_outer		{ $$ = cat2_str(make_str("left"), $2); }
		| RIGHT join_outer		{ $$ = cat2_str(make_str("right"), $2); }
		| INNER_P				{ $$ = make_str("inner"); }
		;

/* OUTER is just noise... */
join_outer:  OUTER_P			{ $$ = make_str("outer"); }
		| /*EMPTY*/				{ $$ = EMPTY;  /* no qualifiers */ }
		;

/* JOIN qualification clauses
 * Possibilities are:
 *	USING ( column list ) allows only unqualified column names,
 *						  which must match between tables.
 *	ON expr allows more general qualifications.
 */

join_qual:	USING '(' name_list ')'
			{ $$ = cat_str(3, make_str("using ("), $3, make_str(")")); }
		| ON a_expr
			{ $$ = cat2_str(make_str("on"), $2); }
		;

relation_expr:	qualified_name
			{ /* normal relations */ $$ = $1; }
		| qualified_name '*'
			{ /* inheritance query */ $$ = cat2_str($1, make_str("*")); }
		| ONLY qualified_name
			{ /* inheritance query */ $$ = cat2_str(make_str("only "), $2); }
		| ONLY '(' qualified_name ')'
			{ /* inheritance query */ $$ = cat_str(3, make_str("only ("), $3, make_str(")")); }
		;

func_table:  func_name '(' ')'
		{ $$ = cat2_str($1, make_str("()")); }
	| func_name '(' expr_list ')'
		{ $$ = cat_str(4, $1, make_str("("), $3, make_str(")")); }
	;

where_clause:  WHERE a_expr		{ $$ = cat2_str(make_str("where"), $2); }
		| /*EMPTY*/				{ $$ = EMPTY;  /* no qualifiers */ }
		;

TableFuncElementList: TableFuncElement
                        { $$ = $1; }
		| TableFuncElementList ',' TableFuncElement
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

TableFuncElement:	ColId Typename	{ $$ = cat2_str($1, $2); }
			;

/*****************************************************************************
 *
 *	Type syntax
 *		SQL92 introduces a large amount of type-specific syntax.
 *		Define individual clauses to handle these cases, and use
 *		 the generic case to handle regular type-extensible Postgres syntax.
 *		- thomas 1997-10-10
 *
 *****************************************************************************/

Typename:  SimpleTypename opt_array_bounds
			{ $$ = cat2_str($1, $2.str); }
		| SETOF SimpleTypename opt_array_bounds
			{ $$ = cat_str(3, make_str("setof"), $2, $3); }
		| SimpleTypename ARRAY '[' PosIntConst ']'
			{ $$ = cat_str(4, $1, make_str("array ["), $4, make_str("]")); }
		| SETOF SimpleTypename ARRAY '[' PosIntConst ']'
			{ $$ = cat_str(5, make_str("setof"), $2, make_str("array ["), $5, make_str("]")); }
		;


opt_array_bounds:  '[' ']' opt_array_bounds
		{
			$$.index1 = make_str("0");
			$$.index2 = $3.index1;
			$$.str = cat2_str(make_str("[]"), $3.str);
		}
		| '[' Iresult ']' opt_array_bounds
		{
			$$.index1 = strdup($2);
			$$.index2 = $4.index1;
			$$.str = cat_str(4, make_str("["), $2, make_str("]"), $4.str);
		}
		| /* EMPTY */
		{
			$$.index1 = make_str("-1");
			$$.index2 = make_str("-1");
			$$.str= EMPTY;
		}
		;

Iresult:	PosIntConst		{ $$ = $1; }
		| '(' Iresult ')'	{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		| Iresult '+' Iresult	{ $$ = cat_str(3, $1, make_str("+"), $3); }
		| Iresult '-' Iresult	{ $$ = cat_str(3, $1, make_str("-"), $3); }
		| Iresult '*' Iresult	{ $$ = cat_str(3, $1, make_str("*"), $3); }
		| Iresult '/' Iresult	{ $$ = cat_str(3, $1, make_str("/"), $3); }
		| Iresult '%' Iresult	{ $$ = cat_str(3, $1, make_str("%"), $3); }
		| Sconst		{ $$ = $1; }
		| ColId			{ $$ = $1; }
		;

SimpleTypename:  GenericType		{ $$ = $1; }
		| ConstDatetime		{ $$ = $1; }
		| Numeric		{ $$ = $1; }
		| Bit			{ $$ = $1; }
		| Character		{ $$ = $1; }
		| ConstInterval opt_interval
			{ $$ = cat2_str($1, $2); }
		| ConstInterval '(' PosIntConst ')' opt_interval
			{ $$ = cat_str(5, $1, make_str("("), $3, make_str(")"), $5); }
		| type_name attrs
			{ $$ = cat2_str($1, $2);}
		;

ConstTypename:	GenericType		{ $$ = $1; }
		| ConstDatetime		{ $$ = $1; }
		| Numeric		{ $$ = $1; }
		| ConstBit		{ $$ = $1; }
		| ConstCharacter	{ $$ = $1; }
		;

GenericType:  type_name			{ $$ = $1; }
		;

/* SQL92 numeric data types
 * Check FLOAT() precision limits assuming IEEE floating types.
 * Provide real DECIMAL() and NUMERIC() implementations now - Jan 1998-12-30
 * - thomas 1997-09-18
 */
Numeric:  INT_P
			{ $$ = make_str("int"); }
		| INTEGER
			{ $$ = make_str("integer"); }
		| SMALLINT
			{ $$ = make_str("smallint"); }
		| BIGINT
			{ $$ = make_str("bigint"); }
		| REAL
			{ $$ = make_str("real"); }
		| FLOAT_P opt_float
			{ $$ = cat2_str(make_str("float"), $2); }
		| DOUBLE_P PRECISION
			{ $$ = make_str("double precision"); }
		| DECIMAL_P opt_decimal
			{ $$ = cat2_str(make_str("decimal"), $2); }
		| DEC opt_decimal
			{ $$ = cat2_str(make_str("dec"), $2); }
		| NUMERIC opt_numeric
			{ $$ = cat2_str(make_str("numeric"), $2); }
		| BOOLEAN_P
			{ $$ = make_str("boolean"); }
		;

opt_float:	'(' PosIntConst ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

opt_numeric:  '(' PosIntConst ',' PosIntConst ')'
			{ $$ = cat_str(5, make_str("("), $2, make_str(","), $4, make_str(")")); }
		| '(' PosIntConst ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

opt_decimal:  '(' PosIntConst ',' PosIntConst ')'
			{ $$ = cat_str(5, make_str("("), $2, make_str(","), $4, make_str(")")); }
		| '(' PosIntConst ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

/*
 * SQL92 bit-field data types
 * The following implements BIT() and BIT VARYING().
 */

Bit:	BitWithLength		{ $$ = $1; }
	| BitWithoutLength	{ $$ = $1; }
	;

ConstBit:	BitWithLength	{ $$ = $1; }
		| BitWithoutLength      { $$ = $1; }
		;

BitWithLength:  BIT opt_varying '(' PosIntConst ')'
			{ $$ = cat_str(5, make_str("bit"), $2, make_str("("), $4, make_str(")")); }
		;

BitWithoutLength: BIT opt_varying
			{ $$ = cat2_str(make_str("bit"), $2); }
		;

/*
 * SQL92 character data types
 * The following implements CHAR() and VARCHAR().
 *								- ay 6/95
 */
Character:	CharacterWithLength		{ $$ = $1; }
		| CharacterWithoutLength	{ $$ = $1; }
		;

ConstCharacter:	CharacterWithLength	{ $$ = $1; }
		| CharacterWithoutLength      { $$ = $1; }
		;

CharacterWithLength: character '(' PosIntConst ')' opt_charset
			{ $$ = cat_str(5, $1, make_str("("), $3, make_str(")"), $5); }
		;

CharacterWithoutLength: character opt_charset
			{ $$ = cat2_str($1, $2); }
		;

character:	CHARACTER opt_varying
			{ $$ = cat2_str(make_str("character"), $2); }
		| CHAR_P opt_varying
			{ $$ = cat2_str(make_str("char"), $2); }
		| VARCHAR
			{ $$ = make_str("varchar"); }
		| NATIONAL CHARACTER opt_varying
			{ $$ = cat2_str(make_str("national character"), $3); }
		| NATIONAL CHAR_P opt_varying
			{ $$ = cat2_str(make_str("national char"), $3); }
		| NCHAR opt_varying
			{ $$ = cat2_str(make_str("nchar"), $2); }
		;

opt_varying:  VARYING
			{ $$ = make_str("varying"); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

opt_charset:  CHARACTER SET ColId
			{ $$ = cat2_str(make_str("character set"), $3); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

ConstDatetime:	TIMESTAMP '(' PosIntConst ')' opt_timezone
			{ $$ = cat_str(4, make_str("timestamp("), $3, make_str(")"), $5); }
		| TIMESTAMP opt_timezone
			{ $$ = cat2_str(make_str("timestamp"), $2); }
		| TIME '(' PosIntConst ')' opt_timezone
			{ $$ = cat_str(4, make_str("time("), $3, make_str(")"), $5); }
		| TIME opt_timezone
			{ $$ = cat2_str(make_str("time"), $2); }
		;

ConstInterval:	INTERVAL
			{ $$ = make_str("interval"); }
		;

opt_timezone:  WITH TIME ZONE
			{ $$ = make_str("with time zone"); }
		| WITHOUT TIME ZONE
			{ $$ = make_str("without time zone"); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

opt_interval:  YEAR_P			{ $$ = make_str("year"); }
		| MONTH_P				{ $$ = make_str("month"); }
		| DAY_P					{ $$ = make_str("day"); }
		| HOUR_P				{ $$ = make_str("hour"); }
		| MINUTE_P				{ $$ = make_str("minute"); }
		| SECOND_P				{ $$ = make_str("second"); }
		| YEAR_P TO MONTH_P		{ $$ = make_str("year to month"); }
		| DAY_P TO HOUR_P		{ $$ = make_str("day to hour"); }
		| DAY_P TO MINUTE_P		{ $$ = make_str("day to minute"); }
		| DAY_P TO SECOND_P		{ $$ = make_str("day to second"); }
		| HOUR_P TO MINUTE_P	{ $$ = make_str("hour to minute"); }
		| MINUTE_P TO SECOND_P	{ $$ = make_str("minute to second"); }
		| HOUR_P TO SECOND_P	{ $$ = make_str("hour to second"); }
		| /*EMPTY*/				{ $$ = EMPTY; }
		;


/*****************************************************************************
 *
 *	expression grammar
 *
 *****************************************************************************/
		
/* General expressions
 * This is the heart of the expression syntax.
 *
 * We have two expression types: a_expr is the unrestricted kind, and
 * b_expr is a subset that must be used in some places to avoid shift/reduce
 * conflicts.  For example, we can't do BETWEEN as "BETWEEN a_expr AND a_expr"
 * because that use of AND conflicts with AND as a boolean operator.  So,
 * b_expr is used in BETWEEN and we remove boolean keywords from b_expr.
 *
 * Note that '(' a_expr ')' is a b_expr, so an unrestricted expression can
 * always be used by surrounding it with parens.
 *
 * c_expr is all the productions that are common to a_expr and b_expr;
 * it's factored out just to eliminate redundant coding.
 */

a_expr:  c_expr
			{ $$ = $1; }
		| a_expr TYPECAST Typename
			{ $$ = cat_str(3, $1, make_str("::"), $3); }
		| a_expr AT TIME ZONE c_expr
			{ $$ = cat_str(3, $1, make_str("at time zone"), $5); }
		/*
		 * These operators must be called out explicitly in order to make use
		 * of yacc/bison's automatic operator-precedence handling.  All other
		 * operator names are handled by the generic productions using "Op",
		 * below; and all those operators will have the same precedence.
		 *
		 * If you add more explicitly-known operators, be sure to add them
		 * also to b_expr and to the MathOp list above.
		 */
		| '+' a_expr %prec UMINUS
			{ $$ = cat2_str(make_str("+"), $2); }
		| '-' a_expr %prec UMINUS
			{ $$ = cat2_str(make_str("-"), $2); }
		| '%' a_expr
			{ $$ = cat2_str(make_str("%"), $2); }
		| '^' a_expr
			{ $$ = cat2_str(make_str("^"), $2); }
		| a_expr '%'
			{ $$ = cat2_str($1, make_str("%")); }
		| a_expr '^'
			{ $$ = cat2_str($1, make_str("^")); }
		| a_expr '+' a_expr
			{ $$ = cat_str(3, $1, make_str("+"), $3); }
		| a_expr '-' a_expr
			{ $$ = cat_str(3, $1, make_str("-"), $3); }
		| a_expr '*' a_expr
			{ $$ = cat_str(3, $1, make_str("*"), $3); }
		| a_expr '/' a_expr
			{ $$ = cat_str(3, $1, make_str("/"), $3); }
		| a_expr '%' a_expr
			{ $$ = cat_str(3, $1, make_str("%"), $3); }
		| a_expr '^' a_expr
			{ $$ = cat_str(3, $1, make_str("^"), $3); }
		| a_expr '<' a_expr
			{ $$ = cat_str(3, $1, make_str("<"), $3); }
		| a_expr '>' a_expr
			{ $$ = cat_str(3, $1, make_str(">"), $3); }
		| a_expr '=' a_expr
			{ $$ = cat_str(3, $1, make_str("="), $3); }
		| a_expr qual_Op a_expr		%prec Op
			{ $$ = cat_str(3, $1, $2, $3); }
		| qual_Op a_expr		%prec Op
			{ $$ = cat2_str($1, $2); }
		| a_expr qual_Op		%prec POSTFIXOP
			{ $$ = cat2_str($1, $2); }
		| a_expr AND a_expr
			{ $$ = cat_str(3, $1, make_str("and"), $3); }
		| a_expr OR a_expr
			{ $$ = cat_str(3, $1, make_str("or"), $3); }
		| NOT a_expr
			{ $$ = cat2_str(make_str("not"), $2); }
		| a_expr LIKE a_expr
			{ $$ = cat_str(3, $1, make_str("like"), $3); }
		| a_expr LIKE a_expr ESCAPE a_expr
			{ $$ = cat_str(5, $1, make_str("like"), $3, make_str("escape"), $5); }
		| a_expr NOT LIKE a_expr
			{ $$ = cat_str(3, $1, make_str("not like"), $4); }
		| a_expr NOT LIKE a_expr ESCAPE a_expr
			{ $$ = cat_str(5, $1, make_str("not like"), $4, make_str("escape"), $6); }
		| a_expr ILIKE a_expr
			{ $$ = cat_str(3, $1, make_str("ilike"), $3); }
		| a_expr ILIKE a_expr ESCAPE a_expr
			{ $$ = cat_str(5, $1, make_str("ilike"), $3, make_str("escape"), $5); }
		| a_expr NOT ILIKE a_expr
			{ $$ = cat_str(3, $1, make_str("not ilike"), $4); }
		| a_expr NOT ILIKE a_expr ESCAPE a_expr
			{ $$ = cat_str(5, $1, make_str("not ilike"), $4, make_str("escape"), $6); }
		| a_expr SIMILAR TO a_expr	%prec SIMILAR
			{ $$ = cat_str(3, $1, make_str("similar to"), $4); }
		| a_expr SIMILAR TO a_expr ESCAPE a_expr
			{ $$ = cat_str(5, $1, make_str("similar to"), $4, make_str("escape"), $6); }
		| a_expr NOT SIMILAR TO a_expr	%prec SIMILAR
			{ $$ = cat_str(3, $1, make_str("not similar to"), $5); }
		| a_expr NOT SIMILAR TO a_expr ESCAPE a_expr
			{ $$ = cat_str(5, $1, make_str("not similar to"), $5, make_str("escape"), $7); }
		| a_expr ISNULL
			{ $$ = cat2_str($1, make_str("isnull")); }
		| a_expr IS NULL_P
			{ $$ = cat2_str($1, make_str("is null")); }
		| a_expr NOTNULL
			{ $$ = cat2_str($1, make_str("notnull")); }
		| a_expr IS NOT NULL_P
			{ $$ = cat2_str($1, make_str("is not null")); }
		/* IS TRUE, IS FALSE, etc used to be function calls
		 *	but let's make them expressions to allow the optimizer
		 *	a chance to eliminate them if a_expr is a constant string.
		 * - thomas 1997-12-22
		 *
		 *	Created BooleanTest Node type, and changed handling
		 *	for NULL inputs
		 * - jec 2001-06-18
		 */
		| a_expr IS TRUE_P
			{ $$ = cat2_str($1, make_str("is true")); }
		| a_expr IS NOT TRUE_P
			{ $$ = cat2_str($1, make_str("is not true")); }
		| a_expr IS FALSE_P
			{ $$ = cat2_str($1, make_str("is false")); }
		| a_expr IS NOT FALSE_P
			{ $$ = cat2_str($1, make_str("is not false")); }
		| a_expr IS UNKNOWN
			{ $$ = cat2_str($1, make_str("is unknown")); }
		| a_expr IS NOT UNKNOWN
			{ $$ = cat2_str($1, make_str("is not unknown")); }
		| a_expr IS DISTINCT FROM a_expr %prec IS
			{ $$ = cat_str(3, $1, make_str("is distinct from"), $5); }
		| a_expr IS OF '(' type_list ')' %prec IS
			{ $$ = cat_str(4, $1, make_str("is of ("), $5, make_str(")")); }
		| a_expr IS NOT OF '(' type_list ')' %prec IS
			{ $$ = cat_str(4, $1, make_str("is not of ("), $6, make_str(")")); }
		| a_expr BETWEEN b_expr AND b_expr	%prec BETWEEN
			{ $$ = cat_str(5, $1, make_str("between"), $3, make_str("and"), $5); }
		| a_expr NOT BETWEEN b_expr AND b_expr	%prec BETWEEN
			{ $$ = cat_str(5, $1, make_str("not between"), $4, make_str("and"), $6); }
		| a_expr IN_P in_expr
			{ $$ = cat_str(3, $1, make_str("in"), $3); }
		| a_expr NOT IN_P in_expr
			{ $$ = cat_str(3, $1, make_str("not in"), $4); }
		| a_expr subquery_Op sub_type select_with_parens %prec Op
			{ $$ = cat_str(4, $1, $2, $3, $4); }
		| a_expr subquery_Op sub_type '(' a_expr ')' %prec Op
			{ $$ = cat_str(6, $1, $2, $3, make_str("("), $5, make_str(")")); }
		| UNIQUE select_with_parens %prec Op
			{ $$ = cat2_str(make_str("unique"), $2); }
		;

/* Restricted expressions
 *
 * b_expr is a subset of the complete expression syntax
 *
 * Presently, AND, NOT, IS and IN are the a_expr keywords that would
 * cause trouble in the places where b_expr is used.  For simplicity, we
 * just eliminate all the boolean-keyword-operator productions from b_expr.
 */
b_expr:  c_expr
			{ $$ = $1; }
		| b_expr TYPECAST Typename
			{ $$ = cat_str(3, $1, make_str("::"), $3); }
		| '-' b_expr %prec UMINUS
			{ $$ = cat2_str(make_str("-"), $2); }
		| '%' b_expr
			{ $$ = cat2_str(make_str("%"), $2); }
		| '^' b_expr
			{ $$ = cat2_str(make_str("^"), $2); }
		| b_expr '%'
			{ $$ = cat2_str($1, make_str("%")); }
		| b_expr '^'
			{ $$ = cat2_str($1, make_str("^")); }
		| b_expr '+' b_expr
			{ $$ = cat_str(3, $1, make_str("+"), $3); }
		| b_expr '-' b_expr
			{ $$ = cat_str(3, $1, make_str("-"), $3); }
		| b_expr '*' b_expr
			{ $$ = cat_str(3, $1, make_str("*"), $3); }
		| b_expr '/' b_expr
			{ $$ = cat_str(3, $1, make_str("/"), $3); }
		| b_expr '%' b_expr
			{ $$ = cat_str(3, $1, make_str("%"), $3); }
		| b_expr '^' b_expr
			{ $$ = cat_str(3, $1, make_str("^"), $3); }
		| b_expr '<' b_expr
			{ $$ = cat_str(3, $1, make_str("<"), $3); }
		| b_expr '>' b_expr
			{ $$ = cat_str(3, $1, make_str(">"), $3); }
		| b_expr '=' b_expr
			{ $$ = cat_str(3, $1, make_str("="), $3); }
		| b_expr Op b_expr
			{ $$ = cat_str(3, $1, $2, $3); }
		| qual_Op b_expr		%prec Op
			{ $$ = cat2_str($1, $2); }
		| b_expr qual_Op		%prec POSTFIXOP
			{ $$ = cat2_str($1, $2); }
		| b_expr IS DISTINCT FROM b_expr %prec IS
			{ $$ = cat_str(3, $1, make_str("is distinct from"), $5); }
		| b_expr IS OF '(' b_expr ')' %prec IS
			{ $$ = cat_str(4, $1, make_str("is of ("), $5, make_str(")")); }
		| b_expr IS NOT OF '(' b_expr ')' %prec IS
			{ $$ = cat_str(4, $1, make_str("is not of ("), $6, make_str(")")); }
		;

/*
 * Productions that can be used in both a_expr and b_expr.
 *
 * Note: productions that refer recursively to a_expr or b_expr mostly
 * cannot appear here.	However, it's OK to refer to a_exprs that occur
 * inside parentheses, such as function arguments; that cannot introduce
 * ambiguity to the b_expr syntax.
 */
c_expr: columnref
			{ $$ = $1;	}
		| AexprConst
			{ $$ = $1;	}
		| PARAM opt_indirection
			{ $$ = cat2_str(make_str("param"), $2); }
		| '(' a_expr ')' opt_indirection
			{ $$ = cat_str(4, make_str("("), $2, make_str(")"), $4); }
		| case_expr
			{ $$ = $1; }
		| func_name '(' ')'
			{ $$ = cat2_str($1, make_str("()"));	}
		| func_name '(' expr_list ')'
			{ $$ = cat_str(4, $1, make_str("("), $3, make_str(")"));	}
		| func_name '(' ALL expr_list ')'
			{ $$ = cat_str(4, $1, make_str("( all"), $4, make_str(")"));	}
		| func_name '(' DISTINCT expr_list ')'
			{ $$ = cat_str(4, $1, make_str("( distinct"), $4, make_str(")"));  }
		| func_name '(' '*' ')'
			{ $$ = cat2_str($1, make_str("(*)")); }
		| CURRENT_DATE
			{ $$ = make_str("current_date"); }
		| CURRENT_TIME opt_empty_parentheses
			{ $$ = cat2_str(make_str("current_time"), $2); }
		| CURRENT_TIME '(' PosIntConst ')'
			{ $$ = make_str("current_time"); }
		| CURRENT_TIMESTAMP opt_empty_parentheses
			{ $$ = cat2_str(make_str("current_timestamp"), $2); }
		| CURRENT_TIMESTAMP '(' PosIntConst ')'
			{ $$ = make_str("current_timestamp"); }
		| CURRENT_USER opt_empty_parentheses
			{ $$ = cat2_str(make_str("current_user"), $2); }
		| SESSION_USER opt_empty_parentheses
			{ $$ = cat2_str(make_str("session_user"), $2); }
		| USER opt_empty_parentheses
			{ $$ = cat2_str(make_str("user"), $2); }
		| CAST '(' a_expr AS Typename ')'
			{ $$ = cat_str(5, make_str("cast("), $3, make_str("as"), $5, make_str(")")); }
		| EXTRACT '(' extract_list ')'
			{ $$ = cat_str(3, make_str("extract("), $3, make_str(")")); }
		| OVERLAY '(' overlay_list ')'
			{ $$ = cat_str(3, make_str("overlay("), $3, make_str(")")); }
		| POSITION '(' position_list ')'
			{ $$ = cat_str(3, make_str("position("), $3, make_str(")")); }
		| SUBSTRING '(' substr_list ')'
			{ $$ = cat_str(3, make_str("substring("), $3, make_str(")")); }
		| TREAT '(' a_expr AS Typename ')'
			{ $$ = cat_str(5, make_str("treat("), $3, make_str("as"), $5, make_str(")")); }
		/* various trim expressions are defined in SQL92 - thomas 1997-07-19 */
		| TRIM '(' BOTH trim_list ')'
			{ $$ = cat_str(3, make_str("trim(both"), $4, make_str(")")); }
		| TRIM '(' LEADING trim_list ')'
			{ $$ = cat_str(3, make_str("trim(leading"), $4, make_str(")")); }
		| TRIM '(' TRAILING trim_list ')'
			{ $$ = cat_str(3, make_str("trim(trailing"), $4, make_str(")")); }
		| TRIM '(' trim_list ')'
			{ $$ = cat_str(3, make_str("trim("), $3, make_str(")")); }
		| CONVERT '(' a_expr USING any_name ')'
		 	{ $$ = cat_str(5, make_str("convert("), $3, make_str("using"), $5, make_str(")"));}
		| CONVERT '(' expr_list ')'
			{ $$ = cat_str(3, make_str("convert("), $3, make_str(")")); }
		| select_with_parens	%prec UMINUS
			{ $$ = $1; }
		| EXISTS select_with_parens
			{ $$ = cat2_str(make_str("exists"), $2); }
		| ARRAY select_with_parens
			{ $$ = cat2_str(make_str("array"), $2); }
		| ARRAY array_expr
			{ $$ = cat2_str(make_str("array"), $2); }
		| row
			{ $$ = $1; }
		;

row: ROW '(' expr_list ')'
		{ $$ = cat_str(3, make_str("row ("), $3, make_str(")")); }
	| ROW '(' ')'
		{ $$ = make_str("row()"); }
	| '(' expr_list ',' a_expr ')'
                { $$ = cat_str(5, make_str("("), $2, make_str(","), $4, make_str(")")); }
	;

sub_type:  ANY		{ $$ = make_str("ANY"); }
	| SOME		{ $$ = make_str("SOME"); }
	| ALL		{ $$ = make_str("ALL"); }
	;

all_Op:  Op 				{ $$ = $1; }
	| MathOp			{ $$ = $1; }
	;

MathOp: '+'				{ $$ = make_str("+"); }
		| '-'			{ $$ = make_str("-"); }
		| '*'			{ $$ = make_str("*"); }
		| '%'			{ $$ = make_str("%"); }
		| '^'			{ $$ = make_str("^"); }
		| '/'			{ $$ = make_str("/"); }
		| '<'			{ $$ = make_str("<"); }
		| '>'			{ $$ = make_str(">"); }
		| '='			{ $$ = make_str("="); }
		;

qual_Op:  Op 				{ $$ = $1; }
		| OPERATOR '(' any_operator ')'	{ $$ = cat_str(3, make_str("operator ("), $3, make_str(")")); }
		;

qual_all_Op:  all_Op 				{ $$ = $1; }
		| OPERATOR '(' any_operator ')'	{ $$ = cat_str(3, make_str("operator ("), $3, make_str(")")); }
		;

subquery_Op:  all_Op 				{ $$ = $1; }
		| OPERATOR '(' any_operator ')'	{ $$ = cat_str(3, make_str("operator ("), $3, make_str(")")); }
		| LIKE 				{ $$ = make_str("like"); }
		| NOT LIKE 			{ $$ = make_str("not like"); }
		| ILIKE 			{ $$ = make_str("ilike"); }
		| NOT ILIKE 			{ $$ = make_str("not ilike"); }
		;

expr_list:	a_expr
			{ $$ = $1; }
		| expr_list ',' a_expr
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

extract_list:  extract_arg FROM a_expr
			{ $$ = cat_str(3, $1, make_str("from"), $3); }
		| /* EMPTY */
			{ $$ = EMPTY; }
		;

type_list:	type_list ',' Typename
			{ $$ = cat_str(3, $1, ',', $3); }
		| Typename
			{ $$ = $1; }
		;

array_expr_list: array_expr				{ $$ = $1; }
		| array_expr_list ',' array_expr	{ $$ = cat_str(3, $1, make_str(","), $3); }
		;
		

array_expr: '[' expr_list ']'			{ $$ = cat_str(3, make_str("["), $2, make_str("]")); }
		| '[' array_expr_list ']'	{ $$ = cat_str(3, make_str("["), $2, make_str("]")); }
		;
/* Allow delimited string SCONST in extract_arg as an SQL extension.
 * - thomas 2001-04-12
 */

extract_arg:  ident				{ $$ = $1; }
		| YEAR_P				{ $$ = make_str("year"); }
		| MONTH_P				{ $$ = make_str("month"); }
		| DAY_P					{ $$ = make_str("day"); }
		| HOUR_P				{ $$ = make_str("hour"); }
		| MINUTE_P				{ $$ = make_str("minute"); }
		| SECOND_P				{ $$ = make_str("second"); }
		| StringConst			{ $$ = $1; }
		;

overlay_list:
		a_expr overlay_placing substr_from substr_for
			{ $$ = cat_str(4, $1, 42, $3, $4); }
		| a_expr overlay_placing substr_from
			{ $$ = cat_str(3, $1, $2, $3); }
		;

overlay_placing:
                        PLACING a_expr		{ $$ = cat2_str(make_str("placing"), $2); }
			;

/* position_list uses b_expr not a_expr to avoid conflict with general IN */
position_list:	b_expr IN_P b_expr
			{ $$ = cat_str(3, $1, make_str("in"), $3); }
		| /* EMPTY */
			{ $$ = EMPTY; }
		;

substr_list:  a_expr substr_from substr_for
			{ $$ = cat_str(3, $1, $2, $3); }
		| a_expr substr_for substr_from
			{ $$ = cat_str(3, $1, $2, $3); }
		| a_expr substr_from
			{ $$ = cat2_str($1, $2); }
		| a_expr substr_for
			{ $$ = cat2_str($1, $2); }
		| expr_list
			{ $$ = $1; }
		| /* EMPTY */
			{ $$ = EMPTY; }
		;

substr_from:  FROM a_expr
			{ $$ = cat2_str(make_str("from"), $2); }
		;

substr_for:  FOR a_expr
			{ $$ = cat2_str(make_str("for"), $2); }
		;

trim_list:	a_expr FROM expr_list
			{ $$ = cat_str(3, $1, make_str("from"), $3); }
		| FROM expr_list
			{ $$ = cat2_str(make_str("from"), $2); }
		| expr_list
			{ $$ = $1; }
		;

in_expr:  select_with_parens
			{ $$ = $1; }
		| '(' expr_list ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		;

/* Case clause
 * Define SQL92-style case clause.
 * Allow all four forms described in the standard:
 * - Full specification
 *	CASE WHEN a = b THEN c ... ELSE d END
 * - Implicit argument
 *	CASE a WHEN b THEN c ... ELSE d END
 * - Conditional NULL
 *	NULLIF(x,y)
 *	same as CASE WHEN x = y THEN NULL ELSE x END
 * - Conditional substitution from list, use first non-null argument
 *	COALESCE(a,b,...)
 * same as CASE WHEN a IS NOT NULL THEN a WHEN b IS NOT NULL THEN b ... END
 * - thomas 1998-11-09
 */
case_expr:	CASE case_arg when_clause_list case_default END_P
			{ $$ = cat_str(5, make_str("case"), $2, $3, $4, make_str("end")); }
		| NULLIF '(' a_expr ',' a_expr ')'
			{ $$ = cat_str(5, make_str("nullif("), $3, make_str(","), $5, make_str(")")); }
		| COALESCE '(' expr_list ')'
			{ $$ = cat_str(3, make_str("coalesce("), $3, make_str(")")); }
		;

when_clause_list:  when_clause_list when_clause
			{ $$ = cat2_str($1, $2); }
		| when_clause
			{ $$ = $1; }
		;

when_clause:  WHEN a_expr THEN a_expr
			{ $$ = cat_str(4, make_str("when"), $2, make_str("then"), $4); }
		;

case_default:  ELSE a_expr
			{ $$ = cat2_str(make_str("else"), $2); }
		| /*EMPTY*/
			{ $$ = EMPTY; }
		;

case_arg:  a_expr			{ $$ = $1; }
		| /*EMPTY*/		{ $$ = EMPTY; }
		;

columnref: relation_name		{ $$ = $1; }
	| relation_name indirection	{ $$ = cat2_str($1, $2); }
	;

indirection_el:
	'.' attr_name			{ $$ = cat2_str(make_str("."), $2); }
	| '.' '*'			{ $$ = make_str(".*"); }
	| '[' a_expr ']'		{ $$ = cat_str(3, make_str("["), $2, make_str("]")); }
	| '[' a_expr ':' a_expr ']'	{ $$ = cat_str(5, make_str("["), $2, make_str(":"), $4, make_str("]")); }
	;

indirection:	indirection_el		{ $$ = $1; }
	| indirection indirection_el	{ $$ = cat2_str($1, $2); }
	;

opt_indirection:
	/*EMPTY*/				{ $$ = EMPTY; }
	| opt_indirection indirection_el	{ $$ = cat2_str($1, $2);} 
	;
	
opt_empty_parentheses: '(' ')'	{ $$ = make_str("()"); }
		| /*EMPTY*/				{ $$ = EMPTY; }
		;


/*****************************************************************************
 *
 *	target lists for SELECT, UPDATE, INSERT
 *
 *****************************************************************************/

target_list:  target_list ',' target_el
			{ $$ = cat_str(3, $1, make_str(","), $3);  }
		| target_el
			{ $$ = $1;	}
		;

/* AS is not optional because shift/red conflict with unary ops */
target_el:	a_expr AS ColLabel
			{ $$ = cat_str(3, $1, make_str("as"), $3); }
		| a_expr
			{ $$ = $1; }
		| '*'
			{ $$ = make_str("*"); }
		;

/* Target list as found in UPDATE table SET ... */
update_target_list:  update_target_list ',' update_target_el
			{ $$ = cat_str(3, $1, make_str(","),$3);	}
		| '(' inf_col_list ')' '=' '(' inf_val_list ')'
			{
				struct inf_compat_col *ptrc;
				struct inf_compat_val *ptrv;
				char *cols = make_str( "(" );
				char *vals = make_str( "(" );
				
				for (ptrc = informix_col, ptrv = informix_val; ptrc != NULL && ptrv != NULL; ptrc = ptrc->next, ptrv = ptrv->next)
				{
					if ( ptrc->next != NULL )
					{
						cols = cat_str(4, cols, ptrc->name, ptrc->indirection, make_str(",") );
					}
					else
					{
						cols = cat_str(4, cols, ptrc->name, ptrc->indirection, make_str(")") );
					}
					if (ptrv->next != NULL )
						vals = cat_str(3, vals, ptrv->val, make_str("," ) );
					else
						vals = cat_str( 3, vals, ptrv->val, make_str(")") );
				}
				$$ = cat_str( 3, cols, make_str("="), vals );
			}
		| update_target_el
			{ $$ = $1;	}
		;

inf_col_list: ColId opt_indirection
		{
			struct inf_compat_col *ptr = mm_alloc(sizeof(struct inf_compat_col));
			
			ptr->name = $1;
			ptr->indirection = $2;
			ptr->next = NULL;
			informix_col = ptr;
		}
		| ColId opt_indirection ',' inf_col_list
		{
			struct inf_compat_col *ptr = mm_alloc(sizeof(struct inf_compat_col));
		
		        ptr->name = $1;
		        ptr->indirection = $2;
		        ptr->next = informix_col;
		        informix_col = ptr;
		}
		;
		
inf_val_list: a_expr
		{
			struct inf_compat_val *ptr = mm_alloc(sizeof(struct inf_compat_val));
			
			ptr->val = $1;
			ptr->next = NULL;
			informix_val = ptr;
		}
		| a_expr ',' inf_val_list
		{
			struct inf_compat_val *ptr = mm_alloc(sizeof(struct inf_compat_val));
		
		        ptr->val = $1;
		        ptr->next = informix_val;
		        informix_val = ptr;
		}
		;

update_target_el:  ColId opt_indirection '=' a_expr
			{ $$ = cat_str(4, $1, $2, make_str("="), $4); }
		| ColId opt_indirection '=' DEFAULT
			{ $$ = cat_str(3, $1, $2, make_str("= default")); }
		;

insert_target_list:  insert_target_list ',' insert_target_el
				{	$$ = cat_str(3, $1, make_str(","), $3);  }
		| insert_target_el
				{	$$ = $1;  }
		;

insert_target_el:  a_expr	{ $$ = $1;  }
		| DEFAULT	{ $$ = make_str("default"); }
		;


/*****************************************************************************
 *
 *	   Names and constants
 *
 *****************************************************************************/

relation_name:  SpecialRuleRelation	{ $$ = $1; }
		| ColId	                { $$ = $1; }
		;

qualified_name_list:  qualified_name
				{ $$ = $1; }
		| qualified_name_list ',' qualified_name
				{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

qualified_name: relation_name
		{ $$ = $1; }
		| relation_name attrs
		{ $$ = cat2_str($1, $2); }
		;

name_list:  name
			{ $$ = $1; }
		| name_list ',' name
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		;


name:				ColId			{ $$ = $1; };
database_name:			ColId			{ $$ = $1; };
access_method:			ColId			{ $$ = $1; };
attr_name:				ColId			{ $$ = $1; };
index_name:				ColId			{ $$ = $1; };

file_name:				StringConst		{ $$ = $1; };

func_name: function_name
			{ $$ = $1; }
		| relation_name indirection
			{ $$ = cat2_str($1, $2); }
		;


/* Constants
 * Include TRUE/FALSE for SQL3 support. - thomas 1997-10-24
 */
AexprConst:  PosAllConst
			{ $$ = $1; }
		| ConstTypename StringConst
			{ $$ = cat2_str($1, $2); }
		| ConstInterval StringConst opt_interval
			{ $$ = cat_str(3, $1, $2, $3); }
		| ConstInterval  '(' PosIntConst ')' StringConst opt_interval
			{ $$ = cat_str(6, $1, make_str("("), $3, make_str(")"), $5, $6); }
		| TRUE_P
			{ $$ = make_str("true"); }
		| FALSE_P
			{ $$ = make_str("false"); }
		| NULL_P
			{ $$ = make_str("null"); }
		| civarind
			{ $$ = $1; }
		;

Iconst:  ICONST				{ $$ = make_name();};
Fconst:  FCONST				{ $$ = make_name();};
Bconst:  BCONST				{ $$ = make_name();};
Xconst:  XCONST				{ $$ = make_name();};
Sconst:  SCONST
		{
			$$ = (char *)mm_alloc(strlen($1) + 3);
			$$[0]='\'';
					strcpy($$+1, $1);
			$$[strlen($1)+2]='\0';
			$$[strlen($1)+1]='\'';
			free($1);
		}
		;

PosIntConst:	Iconst		{ $$ = $1; }
		| civar		{ $$ = $1; }
		;

IntConst:	PosIntConst		{ $$ = $1; }
		| '-' PosIntConst	{ $$ = cat2_str(make_str("-"), $2); }
		;

IntConstVar:	Iconst	
		{
		        char *length = mm_alloc(32);

			sprintf(length, "%d", (int) strlen($1));
			new_variable($1, ECPGmake_simple_type(ECPGt_const, length), 0);
			$$ = $1;
		}
		| cvariable	{ $$ = $1; }
		;

AllConstVar:	Fconst
		{
		        char *length = mm_alloc(32);
			
			sprintf(length, "%d", (int) strlen($1));
			new_variable($1, ECPGmake_simple_type(ECPGt_const, length), 0);
			$$ = $1;
		}
		| IntConstVar		{ $$ = $1; }
		| '-' Fconst
		{
		        char *length = mm_alloc(32);
			char *var = cat2_str(make_str("-"), $2);
			
			sprintf(length, "%d", (int) strlen(var));
			new_variable(var, ECPGmake_simple_type(ECPGt_const, length), 0);
			$$ = var;
		}
		| '-' Iconst
		{
		        char *length = mm_alloc(32);
			char *var = cat2_str(make_str("-"), $2);
			
			sprintf(length, "%d", (int) strlen(var));
			new_variable(var, ECPGmake_simple_type(ECPGt_const, length), 0);
			$$ = var;
		}
		| Sconst		
		{
		        char *length = mm_alloc(32);
			char *var = $1 + 1;
			
			var[strlen(var) - 1] = '\0';
			sprintf(length, "%d", (int) strlen(var));
			new_variable(var, ECPGmake_simple_type(ECPGt_const, length), 0);
			$$ = var;
		}
		;

StringConst:	Sconst		{ $$ = $1; }
		| civar		{ $$ = $1; }
		;

PosIntStringConst:	Iconst	{ $$ = $1; }
		| Sconst	{ $$ = $1; } 
		| civar		{ $$ = $1; }
		;

NumConst:	Fconst			{ $$ = $1; }
		| Iconst		{ $$ = $1; }
		| '-' Fconst		{ $$ = cat2_str(make_str("-"), $2); }
		| '-' Iconst		{ $$ = cat2_str(make_str("-"), $2); } 
		| civar			{ $$ = $1; }
		;

AllConst:	Sconst			{ $$ = $1; }
		| NumConst		{ $$ = $1; }
		;

PosAllConst:	Sconst		{ $$ = $1; }
		| Fconst	{ $$ = $1; }
		| Iconst	{ $$ = $1; }
		| Bconst	{ $$ = $1; }
		| Xconst	{ $$ = $1; }
		| civar		{ $$ = $1; }
		;

UserId:  ColId				{ $$ = $1;};

SpecialRuleRelation:  OLD
		{
			if (!QueryIsRule)
				mmerror(PARSE_ERROR, ET_ERROR, "OLD used in non-rule query");

			$$ = make_str("old");
		}
		| NEW
		{
			if (!QueryIsRule)
				mmerror(PARSE_ERROR, ET_ERROR, "NEW used in non-rule query");

			$$ = make_str("new");
		}
		;

/*
 * and now special embedded SQL stuff
 */

/*
 * the exec sql connect statement: connect to the given database
 */
ECPGConnect: SQL_CONNECT TO connection_target opt_connection_name opt_user
			{ $$ = cat_str(5, $3, make_str(","), $5, make_str(","), $4); }
		| SQL_CONNECT TO DEFAULT
			{ $$ = make_str("NULL,NULL,NULL,\"DEFAULT\""); }
		  /* also allow ORACLE syntax */
		| SQL_CONNECT ora_user
			{ $$ = cat_str(3, make_str("NULL,"), $2, make_str(",NULL")); }
		| DATABASE connection_target
			{ $$ = cat2_str($2, make_str(",NULL,NULL,NULL")); }
		;

connection_target: database_name opt_server opt_port
		{
			/* old style: dbname[@server][:port] */
			if (strlen($2) > 0 && *($2) != '@')
				mmerror(PARSE_ERROR, ET_ERROR, "Expected '@', found '%s'", $2);

			$$ = make3_str(make_str("\""), make3_str($1, $2, $3), make_str("\""));
		}
		|  db_prefix ':' server opt_port '/' database_name opt_options
		{
			/* new style: <tcp|unix>:postgresql://server[:port][/dbname] */
			if (strncmp($1, "unix:postgresql", strlen("unix:postgresql")) != 0 && strncmp($1, "tcp:postgresql", strlen("tcp:postgresql")) != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "only protocols 'tcp' and 'unix' and database type 'postgresql' are supported");

			if (strncmp($3, "//", strlen("//")) != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "Expected '://', found '%s'", $3);

			if (strncmp($1, "unix", strlen("unix")) == 0 &&
				strncmp($3 + strlen("//"), "localhost", strlen("localhost")) != 0 &&
				strncmp($3 + strlen("//"), "127.0.0.1", strlen("127.0.0.1")) != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "unix domain sockets only work on 'localhost' but not on '%9.9s'", $3 + strlen("//"));

			$$ = make3_str(make3_str(make_str("\""), $1, make_str(":")), $3, make3_str(make3_str($4, make_str("/"), $6),	$7, make_str("\"")));
		}
		| Sconst
		{
			if ($1[0] == '\"')
				$$ = $1;
			else
				$$ = make3_str(make_str("\""), $1, make_str("\""));
		}
		| char_variable
		{
			$$ = $1;
		}
		;

db_prefix: ident cvariable
		{
			if (strcmp($2, "postgresql") != 0 && strcmp($2, "postgres") != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "Expected 'postgresql', found '%s'", $2);

			if (strcmp($1, "tcp") != 0 && strcmp($1, "unix") != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "Illegal connection type %s", $1);

			$$ = make3_str($1, make_str(":"), $2);
		}
		;

server: Op server_name
		{
			if (strcmp($1, "@") != 0 && strcmp($1, "//") != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "Expected '@' or '://', found '%s'", $1);

			$$ = make2_str($1, $2);
		}
		;

opt_server: server			{ $$ = $1; }
		| /*EMPTY*/			{ $$ = EMPTY; }
		;

server_name: ColId					{ $$ = $1; }
		| ColId '.' server_name		{ $$ = make3_str($1, make_str("."), $3); }
		| IP						{ $$ = make_name(); }
		;

opt_port: ':' PosIntConst	{ $$ = make2_str(make_str(":"), $2); }
		| /*EMPTY*/			{ $$ = EMPTY; }
		;

opt_connection_name: AS connection_target { $$ = $2; }
		| /*EMPTY*/			{ $$ = make_str("NULL"); }
		;

opt_user: USER ora_user		{ $$ = $2; }
		| /*EMPTY*/			{ $$ = make_str("NULL,NULL"); }
		;

ora_user: user_name
			{ $$ = cat2_str($1, make_str(", NULL")); }
		| user_name '/' user_name
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		| user_name SQL_IDENTIFIED BY user_name
			{ $$ = cat_str(3, $1, make_str(","), $4); }
		| user_name USING user_name
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

user_name: UserId
		{
			if ($1[0] == '\"')
				$$ = $1;
			else
				$$ = make3_str(make_str("\""), $1, make_str("\""));
		}
		| StringConst
		{
			if ($1[0] == '\"')
				$$ = $1;
			else if (strcmp($1, " ?") == 0) /* variable */
			{
				enum ECPGttype type = argsinsert->variable->type->type;

				/* if array see what's inside */
				if (type == ECPGt_array)
					type = argsinsert->variable->type->u.element->type;

				/* handle varchars */
				if (type == ECPGt_varchar)
					$$ = make2_str(mm_strdup(argsinsert->variable->name), make_str(".arr"));
				else
					$$ = mm_strdup(argsinsert->variable->name);
			}
			else
				$$ = make3_str(make_str("\""), $1, make_str("\""));
		}
		;

char_variable: cvariable
		{
			/* check if we have a string variable */
			struct variable *p = find_variable($1);
			enum ECPGttype type = p->type->type;

			/* If we have just one character this is not a string */
			if (atol(p->type->size) == 1)
					mmerror(PARSE_ERROR, ET_ERROR, "invalid datatype");
			else
			{
				/* if array see what's inside */
				if (type == ECPGt_array)
					type = p->type->u.element->type;

				switch (type)
				{
					case ECPGt_char:
					case ECPGt_unsigned_char:
						$$ = $1;
						break;
					case ECPGt_varchar:
						$$ = make2_str($1, make_str(".arr"));
						break;
					default:
						mmerror(PARSE_ERROR, ET_ERROR, "invalid datatype");
						break;
				}
			}
		}
		;

opt_options: Op ColId
		{
			if (strlen($1) == 0)
				mmerror(PARSE_ERROR, ET_ERROR, "incomplete statement");

			if (strcmp($1, "?") != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "unrecognised token '%s'", $1);

			$$ = make2_str(make_str("?"), $2);
		}
		| /*EMPTY*/ 	{ $$ = EMPTY; }
		;

/*
 * Declare a prepared cursor. The syntax is different from the standard
 * declare statement, so we create a new rule.
 */
ECPGCursorStmt:  DECLARE name cursor_options CURSOR opt_hold FOR prepared_name
		{
			struct cursor *ptr, *this;
			struct variable *thisquery = (struct variable *)mm_alloc(sizeof(struct variable));

			for (ptr = cur; ptr != NULL; ptr = ptr->next)
			{
				if (strcmp($2, ptr->name) == 0)
					/* re-definition is a bug */
					mmerror(PARSE_ERROR, ET_ERROR, "cursor %s already defined", $2);
			}

			this = (struct cursor *) mm_alloc(sizeof(struct cursor));

			/* initial definition */
			this->next = cur;
			this->name = $2;
			this->connection = connection;
			this->command =  cat_str(6, make_str("declare"), mm_strdup($2), $3, make_str("cursor"), $5, make_str("for ?"));
			this->argsresult = NULL;

			thisquery->type = &ecpg_query;
			thisquery->brace_level = 0;
			thisquery->next = NULL;
			thisquery->name = (char *) mm_alloc(sizeof("ECPGprepared_statement()") + strlen($7));
			sprintf(thisquery->name, "ECPGprepared_statement(%s)", $7);

			this->argsinsert = NULL;
			add_variable_to_head(&(this->argsinsert), thisquery, &no_indicator);

			cur = this;

			$$ = cat_str(3, make_str("/*"), mm_strdup(this->command), make_str("*/"));
		}
		;

/*
 * the exec sql deallocate prepare command to deallocate a previously
 * prepared statement
 */
ECPGDeallocate: DEALLOCATE PREPARE prepared_name
			{ $$ = $3; }
		| DEALLOCATE prepared_name
			{ $$ = $2; }
		;

/* 
 * variable decalartion outside exec sql declare block
 */
ECPGVarDeclaration: single_vt_declaration;

single_vt_declaration: type_declaration		{ $$ = $1; }
		| single_var_declaration	{ $$ = $1; }
		;
	
single_var_declaration: storage_declaration 
		var_type
		{
			actual_type[struct_level].type_enum = $2.type_enum;
			actual_type[struct_level].type_dimension = $2.type_dimension;
			actual_type[struct_level].type_index = $2.type_index;
			actual_type[struct_level].type_sizeof = $2.type_sizeof;

			actual_startline[struct_level] = hashline_number();
		}
		variable_list ';'
		{
			$$ = cat_str(5, actual_startline[struct_level], $1, $2.type_str, $4, make_str(";\n"));
		}
		| var_type
		{
			actual_type[struct_level].type_enum = $1.type_enum;
			actual_type[struct_level].type_dimension = $1.type_dimension;
			actual_type[struct_level].type_index = $1.type_index;
			actual_type[struct_level].type_sizeof = $1.type_sizeof;

			actual_startline[struct_level] = hashline_number();
		}
		variable_list ';'
		{
			$$ = cat_str(4, actual_startline[struct_level], $1.type_str, $3, make_str(";\n"));
		}
		| struct_union_type_with_symbol ';'
		{
			$$ = cat2_str($1, make_str(";"));
		}
		;

precision:	NumConst	{ $$ = $1; };

opt_scale:	',' NumConst	{ $$ = $2; }
		| /* EMPTY */	{ $$ = EMPTY; }
		;

ecpg_interval:	opt_interval	{ $$ = $1; }
		| YEAR_P TO MINUTE_P	{ $$ = make_str("year to minute"); }
		| YEAR_P TO SECOND_P	{ $$ = make_str("year to second"); }
		| DAY_P TO DAY_P	{ $$ = make_str("day to day"); }
		| MONTH_P TO MONTH_P	{ $$ = make_str("month to month"); }
		;

/*
 * variable declaration inside exec sql declare block
 */
ECPGDeclaration: sql_startdeclare
		{ fputs("/* exec sql begin declare section */", yyout); }
		var_type_declarations sql_enddeclare
		{
			fprintf(yyout, "%s/* exec sql end declare section */", $3);
			free($3);
			output_line_number();
		}
		;

sql_startdeclare: ecpgstart BEGIN_P DECLARE SQL_SECTION ';' {};

sql_enddeclare: ecpgstart END_P DECLARE SQL_SECTION ';' {};

var_type_declarations:	/*EMPTY*/			{ $$ = EMPTY; }
		| vt_declarations			{ $$ = $1; }
		;

vt_declarations:  var_declaration			{ $$ = $1; }
		| type_declaration			{ $$ = $1; }
		| vt_declarations var_declaration	{ $$ = cat2_str($1, $2); }
		| vt_declarations type_declaration	{ $$ = cat2_str($1, $2); }
		;

variable_declarations:	var_declaration                         { $$ = $1; }
		| variable_declarations var_declaration         { $$ = cat2_str($1, $2); }
		;

type_declaration: S_TYPEDEF
	{
		/* reset this variable so we see if there was */
		/* an initializer specified */
		initializer = 0;
	}
	var_type opt_pointer ECPGColLabelCommon opt_array_bounds ';'
	{
		/* add entry to list */
		struct typedefs *ptr, *this;
		char * dimension = $6.index1;
		char * length = $6.index2;

		if (($3.type_enum == ECPGt_struct ||
		     $3.type_enum == ECPGt_union) &&
		    initializer == 1)
		{
			mmerror(PARSE_ERROR, ET_ERROR, "Initializer not allowed in typedef command");

		}
		else
		{
			for (ptr = types; ptr != NULL; ptr = ptr->next)
			{
				if (strcmp($5, ptr->name) == 0)
			        	/* re-definition is a bug */
					mmerror(PARSE_ERROR, ET_ERROR, "Type %s already defined", $5);
			}
			adjust_array($3.type_enum, &dimension, &length, $3.type_dimension, $3.type_index, *$4?1:0, true);

			this = (struct typedefs *) mm_alloc(sizeof(struct typedefs));

	        	/* initial definition */
		        this->next = types;
	        	this->name = $5;
	        	this->brace_level = braces_open;
			this->type = (struct this_type *) mm_alloc(sizeof(struct this_type));
			this->type->type_enum = $3.type_enum;
			this->type->type_str = mm_strdup($5);
			this->type->type_dimension = dimension; /* dimension of array */
			this->type->type_index = length;    /* length of string */
			this->type->type_sizeof = ECPGstruct_sizeof;
			this->struct_member_list = ($3.type_enum == ECPGt_struct || $3.type_enum == ECPGt_union) ?
				struct_member_list[struct_level] : NULL;

			if ($3.type_enum != ECPGt_varchar &&
			    $3.type_enum != ECPGt_char &&
	        	    $3.type_enum != ECPGt_unsigned_char &&
			    atoi(this->type->type_index) >= 0)
				mmerror(PARSE_ERROR, ET_ERROR, "No multidimensional array support for simple data types");

			types = this;
		}

		fprintf(yyout, "typedef %s %s %s %s;\n", $3.type_str, *$4?"*":"", $5, $6.str);
		output_line_number();
		$$ = make_str("");
	};

var_declaration: storage_declaration
		var_type
		{
			actual_type[struct_level].type_enum = $2.type_enum;
			actual_type[struct_level].type_dimension = $2.type_dimension;
			actual_type[struct_level].type_index = $2.type_index;
			actual_type[struct_level].type_sizeof = $2.type_sizeof;

			actual_startline[struct_level] = hashline_number();
		}
		variable_list ';'
		{
			$$ = cat_str(5, actual_startline[struct_level], $1, $2.type_str, $4, make_str(";\n"));
		}
		| var_type
		{
			actual_type[struct_level].type_enum = $1.type_enum;
			actual_type[struct_level].type_dimension = $1.type_dimension;
			actual_type[struct_level].type_index = $1.type_index;
			actual_type[struct_level].type_sizeof = $1.type_sizeof;
			
			actual_startline[struct_level] = hashline_number();
		}
		variable_list ';'
		{
			$$ = cat_str(4, actual_startline[struct_level], $1.type_str, $3, make_str(";\n"));
		}
		| struct_union_type_with_symbol ';'
		{
			$$ = cat2_str($1, make_str(";"));
		}
		;

storage_declaration: storage_clause storage_modifier
		{
			$$ = cat2_str ($1, $2);
		}
		| storage_clause
		{
			$$ = $1;
		}
		| storage_modifier
		{
			$$ = $1;
		}
		;

storage_clause : S_EXTERN		{ $$ = make_str("extern"); }
		| S_STATIC		{ $$ = make_str("static"); }
		| S_REGISTER		{ $$ = make_str("register"); }
		| S_AUTO		{ $$ = make_str("auto"); }
		;

storage_modifier : S_CONST		{ $$ = make_str("const"); }
		| S_VOLATILE		{ $$ = make_str("volatile"); }
		;

var_type:	simple_type
		{
			$$.type_enum = $1;
			$$.type_str = mm_strdup(ECPGtype_name($1));
			$$.type_dimension = make_str("-1");
			$$.type_index = make_str("-1");
			$$.type_sizeof = NULL;
		}
		| struct_union_type
		{
			$$.type_str = $1;
			$$.type_dimension = make_str("-1");
			$$.type_index = make_str("-1");

			if (strncmp($1, "struct", sizeof("struct")-1) == 0)
			{
				$$.type_enum = ECPGt_struct;
				$$.type_sizeof = ECPGstruct_sizeof;
			}
			else
			{
				$$.type_enum = ECPGt_union;
				$$.type_sizeof = NULL;
			}
		}
		| enum_type
		{
			$$.type_str = $1;
			$$.type_enum = ECPGt_int;
			$$.type_dimension = make_str("-1");
			$$.type_index = make_str("-1");
			$$.type_sizeof = NULL;
		}
		| ECPGColLabelCommon '(' precision opt_scale ')'
		{
			if (strcmp($1, "numeric") == 0)
			{
				$$.type_enum = ECPGt_numeric;
				$$.type_str = make_str("numeric");
			}
			else if (strcmp($1, "decimal") == 0)
			{
				$$.type_enum = ECPGt_decimal;
				$$.type_str = make_str("decimal");
			}
			else
			{
				mmerror(PARSE_ERROR, ET_ERROR, "Only numeric/decimal have precision/scale argument");
				$$.type_enum = ECPGt_numeric;
				$$.type_str = make_str("numeric");
			}
			
			$$.type_dimension = make_str("-1");
			$$.type_index = make_str("-1");
			$$.type_sizeof = NULL;
		}
		| ECPGColLabelCommon ecpg_interval
		{
			if (strlen($2) != 0 && strcmp ($1, "datetime") != 0 && strcmp ($1, "interval") != 0)
				mmerror (PARSE_ERROR, ET_ERROR, "Interval specification not allowed here ");
			
			/*
			 * Check for type names that the SQL grammar treats as
			 * unreserved keywords
			 */
			if (strcmp($1, "varchar") == 0)
			{
				$$.type_enum = ECPGt_varchar;
				$$.type_str = EMPTY; /*make_str("varchar");*/
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "float") == 0)
			{
				$$.type_enum = ECPGt_float;
				$$.type_str = make_str("float");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "double") == 0)
			{
				$$.type_enum = ECPGt_double;
				$$.type_str = make_str("double");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "numeric") == 0)
			{
				$$.type_enum = ECPGt_numeric;
				$$.type_str = make_str("numeric");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "decimal") == 0)
			{
				$$.type_enum = ECPGt_decimal;
				$$.type_str = make_str("decimal");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "date") == 0)
			{
				$$.type_enum = ECPGt_date;
				$$.type_str = make_str("date");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "timestamp") == 0)
			{
				$$.type_enum = ECPGt_timestamp;
				$$.type_str = make_str("timestamp");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "interval") == 0)
			{
				$$.type_enum = ECPGt_interval;
				$$.type_str = make_str("interval");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "datetime") == 0)
			{
				$$.type_enum = ECPGt_timestamp;
				$$.type_str = make_str("timestamp");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else
			{
				/* this is for typedef'ed types */
				struct typedefs *this = get_typedef($1);

				$$.type_str = (this->type->type_enum == ECPGt_varchar) ? EMPTY : mm_strdup(this->name);
				$$.type_enum = this->type->type_enum;
				$$.type_dimension = this->type->type_dimension;
				$$.type_index = this->type->type_index;
				$$.type_sizeof = this->type->type_sizeof;
				struct_member_list[struct_level] = ECPGstruct_member_dup(this->struct_member_list);
			}
		}
		| s_struct_union_symbol
		{
			/* this is for named structs/unions */
			char *name;
			struct typedefs *this;
			bool forward = (forward_name != NULL && strcmp($1.symbol, forward_name) == 0 && strcmp($1.su, "struct") == 0);

			name = cat2_str($1.su, $1.symbol);
			/* Do we have a forward definition? */
			if (!forward)
			{
				/* No */
				
				this = get_typedef(name);
				$$.type_str = mm_strdup(this->name);
				$$.type_enum = this->type->type_enum;
				$$.type_dimension = this->type->type_dimension;
				$$.type_index = this->type->type_index;
				$$.type_sizeof = this->type->type_sizeof;
				struct_member_list[struct_level] = ECPGstruct_member_dup(this->struct_member_list);
				free(name);
			}
			else
			{
				$$.type_str = name;
                                $$.type_enum = ECPGt_long;
                                $$.type_dimension = make_str("-1");
                                $$.type_index = make_str("-1");
                                $$.type_sizeof = make_str("");
                                struct_member_list[struct_level] = NULL;
			}
		}
		;

enum_type: SQL_ENUM symbol enum_definition
			{ $$ = cat_str(3, make_str("enum"), $2, $3); }
		| SQL_ENUM enum_definition
			{ $$ = cat2_str(make_str("enum"), $2); }
		| SQL_ENUM symbol
			{ $$ = cat2_str(make_str("enum"), $2); }
		;

enum_definition: '{' c_list '}'
			{ $$ = cat_str(3, make_str("{"), $2, make_str("}")); };

struct_union_type_with_symbol: s_struct_union_symbol
		{
			struct_member_list[struct_level++] = NULL;
			if (struct_level >= STRUCT_DEPTH)
				 mmerror(PARSE_ERROR, ET_ERROR, "Too many levels in nested structure/union definition");
			forward_name = mm_strdup($1.symbol);
		} 
		'{' variable_declarations '}'
		{
			struct typedefs *ptr, *this;
			struct this_type su_type;
			
			ECPGfree_struct_member(struct_member_list[struct_level]);
			struct_member_list[struct_level] = NULL;
			struct_level--;
			if (strncmp($1.su, "struct", sizeof("struct")-1) == 0)
				su_type.type_enum = ECPGt_struct;
			else
				su_type.type_enum = ECPGt_union;
			su_type.type_str = cat2_str($1.su, $1.symbol);
			free(forward_name);
			forward_name = NULL;
			
			/* This is essantially a typedef but needs the keyword struct/union as well.
			 * So we create the typedef for each struct definition with symbol */
			for (ptr = types; ptr != NULL; ptr = ptr->next)
                        {
                                if (strcmp(su_type.type_str, ptr->name) == 0)
                                        /* re-definition is a bug */
                                        mmerror(PARSE_ERROR, ET_ERROR, "Type %s already defined", su_type.type_str);
                        }

                        this = (struct typedefs *) mm_alloc(sizeof(struct typedefs));

                        /* initial definition */
                        this->next = types;
			this->name = mm_strdup(su_type.type_str);
			this->brace_level = braces_open;
                        this->type = (struct this_type *) mm_alloc(sizeof(struct this_type));
                        this->type->type_enum = su_type.type_enum;
                        this->type->type_str = mm_strdup(su_type.type_str);
                        this->type->type_dimension = make_str("-1"); /* dimension of array */
                        this->type->type_index = make_str("-1");    /* length of string */
                        this->type->type_sizeof = ECPGstruct_sizeof;
                        this->struct_member_list = struct_member_list[struct_level];

			types = this;
			$$ = cat_str(4, su_type.type_str, make_str("{"), $4, make_str("}"));
		}
		;

struct_union_type: struct_union_type_with_symbol	{ $$ = $1; }
		| s_struct_union
		{
			struct_member_list[struct_level++] = NULL;
			if (struct_level >= STRUCT_DEPTH)
				 mmerror(PARSE_ERROR, ET_ERROR, "Too many levels in nested structure/union definition");
		}
		'{' variable_declarations '}'
		{
			ECPGfree_struct_member(struct_member_list[struct_level]);
			struct_member_list[struct_level] = NULL;
			struct_level--;
			$$ = cat_str(4, $1, make_str("{"), $4, make_str("}"));
		}
		;

s_struct_union_symbol: SQL_STRUCT symbol
		{
			$$.su = make_str("struct");
			$$.symbol = $2;
			ECPGstruct_sizeof = cat_str(3, make_str("sizeof("), cat2_str(mm_strdup($$.su), mm_strdup($$.symbol)), make_str(")")); 
		}
		| UNION symbol
		{
			$$.su = make_str("union");
			$$.symbol = $2;
		}
		;

s_struct_union: SQL_STRUCT	
		{
			ECPGstruct_sizeof = make_str(""); /* This must not be NULL to distinguish from simple types. */
			$$ = make_str("struct");
		}
		| UNION 	{ $$ = make_str("union"); }
		;

simple_type: unsigned_type					{ $$=$1; }
		|	opt_signed signed_type			{ $$=$2; }
		;

unsigned_type: SQL_UNSIGNED SQL_SHORT		{ $$ = ECPGt_unsigned_short; }
		| SQL_UNSIGNED SQL_SHORT INT_P	{ $$ = ECPGt_unsigned_short; }
		| SQL_UNSIGNED						{ $$ = ECPGt_unsigned_int; }
		| SQL_UNSIGNED INT_P				{ $$ = ECPGt_unsigned_int; }
		| SQL_UNSIGNED SQL_LONG				{ $$ = ECPGt_unsigned_long; }
		| SQL_UNSIGNED SQL_LONG INT_P		{ $$ = ECPGt_unsigned_long; }
		| SQL_UNSIGNED SQL_LONG SQL_LONG
		{
#ifdef HAVE_LONG_LONG_INT_64
			$$ = ECPGt_unsigned_long_long;
#else
			$$ = ECPGt_unsigned_long;
#endif
		}
		| SQL_UNSIGNED SQL_LONG SQL_LONG INT_P
		{
#ifdef HAVE_LONG_LONG_INT_64
			$$ = ECPGt_unsigned_long_long;
#else
			$$ = ECPGt_unsigned_long;
#endif
		}
		| SQL_UNSIGNED CHAR_P			{ $$ = ECPGt_unsigned_char; }
		;

signed_type: SQL_SHORT				{ $$ = ECPGt_short; }
		| SQL_SHORT INT_P			{ $$ = ECPGt_short; }
		| INT_P					{ $$ = ECPGt_int; }
		| SQL_LONG					{ $$ = ECPGt_long; }
		| SQL_LONG INT_P			{ $$ = ECPGt_long; }
		| SQL_LONG SQL_LONG
		{
#ifdef HAVE_LONG_LONG_INT_64
			$$ = ECPGt_long_long;
#else
			$$ = ECPGt_long;
#endif
		}
		| SQL_LONG SQL_LONG INT_P
		{
#ifdef HAVE_LONG_LONG_INT_64
			$$ = ECPGt_long_long;
#else
			$$ = ECPGt_long;
#endif
		}
		| SQL_BOOL					{ $$ = ECPGt_bool; }
		| CHAR_P					{ $$ = ECPGt_char; }
		| DOUBLE_P					{ $$ = ECPGt_double; }
		;

opt_signed: SQL_SIGNED
		|	/* EMPTY */
		;

variable_list: variable
			{ $$ = $1; }
		| variable_list ',' variable
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

variable: opt_pointer ECPGColLabel opt_array_bounds opt_initializer
		{
			struct ECPGtype * type;
			char *dimension = $3.index1; /* dimension of array */
			char *length = $3.index2;    /* length of string */
			char dim[14L];

			adjust_array(actual_type[struct_level].type_enum, &dimension, &length, actual_type[struct_level].type_dimension, actual_type[struct_level].type_index, strlen($1), false);

			switch (actual_type[struct_level].type_enum)
			{
				case ECPGt_struct:
				case ECPGt_union:
					if (atoi(dimension) < 0)
						type = ECPGmake_struct_type(struct_member_list[struct_level], actual_type[struct_level].type_enum, actual_type[struct_level].type_sizeof);
					else
						type = ECPGmake_array_type(ECPGmake_struct_type(struct_member_list[struct_level], actual_type[struct_level].type_enum, actual_type[struct_level].type_sizeof), dimension);

					$$ = cat_str(4, $1, mm_strdup($2), $3.str, $4);
					break;

				case ECPGt_varchar:
					if (atoi(dimension) < 0)
						type = ECPGmake_simple_type(actual_type[struct_level].type_enum, length);
					else
						type = ECPGmake_array_type(ECPGmake_simple_type(actual_type[struct_level].type_enum, length), dimension);

					if (strcmp(dimension, "0") == 0 || abs(atoi(dimension)) == 1)
							*dim = '\0';
					else	
							sprintf(dim, "[%s]", dimension);
					if (strcmp(length, "0") == 0)
						mmerror(PARSE_ERROR, ET_ERROR, "pointer to varchar are not implemented");

					if (strcmp(dimension, "0") == 0)
						$$ = cat_str(6, make2_str(make_str(" struct varchar_"), mm_strdup($2)), make_str(" { int len; char arr["), mm_strdup(length), make_str("]; } *"), mm_strdup($2), $4);
					else
						$$ = cat_str(7, make2_str(make_str(" struct varchar_"), mm_strdup($2)), make_str(" { int len; char arr["), mm_strdup(length), make_str("]; } "), mm_strdup($2), mm_strdup(dim), $4);
					break;

				case ECPGt_char:
				case ECPGt_unsigned_char:
					if (atoi(dimension) == -1)
						type = ECPGmake_simple_type(actual_type[struct_level].type_enum, length);
					else
						type = ECPGmake_array_type(ECPGmake_simple_type(actual_type[struct_level].type_enum, length), dimension);

					$$ = cat_str(4, $1, mm_strdup($2), $3.str, $4);
					break;

				default:
					if (atoi(dimension) < 0)
						type = ECPGmake_simple_type(actual_type[struct_level].type_enum, make_str("1"));
					else
						type = ECPGmake_array_type(ECPGmake_simple_type(actual_type[struct_level].type_enum, make_str("1")), dimension);

					$$ = cat_str(4, $1, mm_strdup($2), $3.str, $4);
					break;
			}

			if (struct_level == 0)
				new_variable($2, type, braces_open);
			else
				ECPGmake_struct_member($2, type, &(struct_member_list[struct_level - 1]));

			free($2);
		}
		;

opt_initializer: /*EMPTY*/
			{ $$ = EMPTY; }
		| '=' c_term
		{
			initializer = 1;
			$$ = cat2_str(make_str("="), $2);
		}
		;

opt_pointer: /*EMPTY*/				{ $$ = EMPTY; }
		| '*'						{ $$ = make_str("*"); }
		| '*' '*'					{ $$ = make_str("**"); }
		;

/*
 * We try to simulate the correct DECLARE syntax here so we get dynamic SQL
 */
ECPGDeclare: DECLARE STATEMENT ident
		{
			/* this is only supported for compatibility */
			$$ = cat_str(3, make_str("/* declare statement"), $3, make_str("*/"));
		}
		;
/*
 * the exec sql disconnect statement: disconnect from the given database
 */
ECPGDisconnect: SQL_DISCONNECT dis_name { $$ = $2; }
		;

dis_name: connection_object				{ $$ = $1; }
		| SQL_CURRENT						{ $$ = make_str("\"CURRENT\""); }
		| ALL							{ $$ = make_str("\"ALL\""); }
		| /*EMPTY*/						{ $$ = make_str("\"CURRENT\""); }
		;

connection_object: connection_target	{ $$ = $1; }
		| DEFAULT						{ $$ = make_str("\"DEFAULT\""); }
		;

/*
 * execute a given string as sql command
 */
ECPGExecute : EXECUTE IMMEDIATE execstring
		{
			struct variable *thisquery = (struct variable *)mm_alloc(sizeof(struct variable));

			thisquery->type = &ecpg_query;
			thisquery->brace_level = 0;
			thisquery->next = NULL;
			thisquery->name = $3;

			add_variable_to_head(&argsinsert, thisquery, &no_indicator);

			$$ = make_str("?");
		}
		| EXECUTE prepared_name
		{
			struct variable *thisquery = (struct variable *)mm_alloc(sizeof(struct variable));

			thisquery->type = &ecpg_query;
			thisquery->brace_level = 0;
			thisquery->next = NULL;
			thisquery->name = (char *) mm_alloc(sizeof("ECPGprepared_statement()") + strlen($2));
			sprintf(thisquery->name, "ECPGprepared_statement(%s)", $2);

			add_variable_to_head(&argsinsert, thisquery, &no_indicator);
		}
		execute_rest
		{
			$$ = make_str("?");
		}
		;

execute_rest:	ecpg_using ecpg_into	{ $$ = EMPTY; }
		| ecpg_into ecpg_using	{ $$ = EMPTY; }
		| ecpg_using		{ $$ = EMPTY; }
		| ecpg_into 		{ $$ = EMPTY; }
		| /* EMPTY */		{ $$ = EMPTY; }
		;

execstring: char_variable
			{ $$ = $1; }
		|	CSTRING
			{ $$ = make3_str(make_str("\""), $1, make_str("\"")); }
		;

prepared_name: name	 	{ $$ = make3_str(make_str("\""), $1, make_str("\"")); }
		| char_variable	{ $$ = $1; }
		;

/*
 * the exec sql free command to deallocate a previously
 * prepared statement
 */
ECPGFree:	SQL_FREE name	{ $$ = $2; };

/*
 * open is an open cursor, at the moment this has to be removed
 */
ECPGOpen: SQL_OPEN name opt_ecpg_using { $$ = $2; };

opt_ecpg_using: /*EMPTY*/		{ $$ = EMPTY; }
		| ecpg_using		{ $$ = $1; }
		;

ecpg_using:	USING using_list 	{ $$ = EMPTY; }
		| using_descriptor      { $$ = $1; }
		;

using_descriptor: USING opt_sql SQL_DESCRIPTOR quoted_ident_stringvar
		{
			add_variable_to_head(&argsinsert, descriptor_variable($4,0), &no_indicator);
			$$ = EMPTY;
		}
		;

into_descriptor: INTO opt_sql SQL_DESCRIPTOR quoted_ident_stringvar
		{
			add_variable_to_head(&argsresult, descriptor_variable($4,1), &no_indicator);
			$$ = EMPTY;
		}
		;
		
opt_sql: /*EMPTY*/ | SQL_SQL;

ecpg_into: INTO into_list		{ $$ = EMPTY; }
		| into_descriptor	{ $$ = $1; }
		;
		
using_list: UsingConst | UsingConst ',' using_list;

UsingConst: AllConst
		{
			if ($1[1] != '?') /* found a constant */
			{
				char *length = mm_alloc(32);

				sprintf(length, "%d", (int) strlen($1));
				add_variable_to_head(&argsinsert, new_variable($1, ECPGmake_simple_type(ECPGt_const, length), 0), &no_indicator);
			}
		}
		| civarind { $$ = EMPTY; }
		;

/*
 * As long as the prepare statement is not supported by the backend, we will
 * try to simulate it here so we get dynamic SQL
 *
 * It is supported now but not usable yet by ecpg.
 */
ECPGPrepare: PREPARE prepared_name FROM execstring
			{ $$ = cat_str(3, $2, make_str(","), $4); }
		;
/* 
 * We accept descibe but do nothing with it so far.
 */
ECPGDescribe: SQL_DESCRIBE INPUT_P name using_descriptor 
	{
		mmerror(PARSE_ERROR, ET_WARNING, "using unsupported describe statement.\n");
		$$ = (char *) mm_alloc(sizeof("1, ECPGprepared_statement(\"\")") + strlen($3));
		sprintf($$, "1, ECPGprepared_statement(\"%s\")", $3);
	}
	| SQL_DESCRIBE opt_output name using_descriptor
	{
		mmerror(PARSE_ERROR, ET_WARNING, "using unsupported describe statement.\n");
		$$ = (char *) mm_alloc(sizeof("0, ECPGprepared_statement(\"\")") + strlen($3));
		sprintf($$, "0, ECPGprepared_statement(\"%s\")", $3);
	}
	| SQL_DESCRIBE opt_output name into_descriptor
	{
		mmerror(PARSE_ERROR, ET_WARNING, "using unsupported describe statement.\n");
		$$ = (char *) mm_alloc(sizeof("0, ECPGprepared_statement(\"\")") + strlen($3));
		sprintf($$, "0, ECPGprepared_statement(\"%s\")", $3);
	}
	;

opt_output:	SQL_OUTPUT	{ $$ = make_str("output"); }
	| 	/* EMPTY */	{ $$ = EMPTY; }
	;
	
/*
 * dynamic SQL: descriptor based access
 *	originall written by Christof Petig <christof.petig@wtal.de>
 *			and Peter Eisentraut <peter.eisentraut@credativ.de>
 */

/*
 * allocate a descriptor
 */
ECPGAllocateDescr:     SQL_ALLOCATE SQL_DESCRIPTOR quoted_ident_stringvar
               {
                       add_descriptor($3,connection);
                       $$ = $3;
               };

 
/*
 * deallocate a descriptor
 */
ECPGDeallocateDescr:	DEALLOCATE SQL_DESCRIPTOR quoted_ident_stringvar
		{
			drop_descriptor($3,connection);
			$$ = $3;
		}
		;

/*
 * manipulate a descriptor header
 */

ECPGGetDescriptorHeader: GET SQL_DESCRIPTOR quoted_ident_stringvar ECPGGetDescHeaderItems
			{  $$ = $3; }
		;

ECPGGetDescHeaderItems: ECPGGetDescHeaderItem
		| ECPGGetDescHeaderItems ',' ECPGGetDescHeaderItem
		;

ECPGGetDescHeaderItem: cvariable '=' desc_header_item
			{ push_assignment($1, $3); }
		;


ECPGSetDescriptorHeader: SET SQL_DESCRIPTOR quoted_ident_stringvar ECPGSetDescHeaderItems
			{ $$ = $3; }

ECPGSetDescHeaderItems: ECPGSetDescHeaderItem
		| ECPGSetDescHeaderItems ',' ECPGSetDescHeaderItem
		;

ECPGSetDescHeaderItem: desc_header_item '=' IntConstVar
                {
			push_assignment($3, $1);
		}
		;


desc_header_item:	SQL_COUNT			{ $$ = ECPGd_count; }
		;

/*
 * manipulate a descriptor
 */

ECPGGetDescriptor:	GET SQL_DESCRIPTOR quoted_ident_stringvar SQL_VALUE IntConstVar ECPGGetDescItems
			{  $$.str = $5; $$.name = $3; }
		;

ECPGGetDescItems: ECPGGetDescItem
		| ECPGGetDescItems ',' ECPGGetDescItem
		;

ECPGGetDescItem: cvariable '=' descriptor_item	{ push_assignment($1, $3); };


ECPGSetDescriptor:	SET SQL_DESCRIPTOR quoted_ident_stringvar SQL_VALUE IntConstVar ECPGSetDescItems
			{  $$.str = $5; $$.name = $3; }
		;

ECPGSetDescItems: ECPGSetDescItem
		| ECPGSetDescItems ',' ECPGSetDescItem
		;

ECPGSetDescItem: descriptor_item '=' AllConstVar
		{
			push_assignment($3, $1);
		}
		;


descriptor_item:	SQL_CARDINALITY			{ $$ = ECPGd_cardinality; }
		| SQL_DATA				{ $$ = ECPGd_data; }
		| SQL_DATETIME_INTERVAL_CODE		{ $$ = ECPGd_di_code; }
		| SQL_DATETIME_INTERVAL_PRECISION 	{ $$ = ECPGd_di_precision; }
		| SQL_INDICATOR				{ $$ = ECPGd_indicator; }
		| SQL_KEY_MEMBER			{ $$ = ECPGd_key_member; }
		| SQL_LENGTH				{ $$ = ECPGd_length; }
		| SQL_NAME				{ $$ = ECPGd_name; }
		| SQL_NULLABLE				{ $$ = ECPGd_nullable; }
		| SQL_OCTET_LENGTH			{ $$ = ECPGd_octet; }
		| PRECISION				{ $$ = ECPGd_precision; }
		| SQL_RETURNED_LENGTH			{ $$ = ECPGd_length; }
		| SQL_RETURNED_OCTET_LENGTH		{ $$ = ECPGd_ret_octet; }
		| SQL_SCALE				{ $$ = ECPGd_scale; }
		| TYPE_P				{ $$ = ECPGd_type; }
		;


/*
 * for compatibility with ORACLE we will also allow the keyword RELEASE
 * after a transaction statement to disconnect from the database.
 */

ECPGRelease: TransactionStmt SQL_RELEASE
		{
			if (strcmp($1, "begin") == 0)
							mmerror(PARSE_ERROR, ET_ERROR, "RELEASE does not make sense when beginning a transaction");

			fprintf(yyout, "ECPGtrans(__LINE__, %s, \"%s\");",
					connection ? connection : "NULL", $1);
			whenever_action(0);
			fprintf(yyout, "ECPGdisconnect(__LINE__, %s);",
					connection ? connection : "\"CURRENT\"");
			whenever_action(0);
			free($1);
		}
		;

/*
 * set/reset the automatic transaction mode, this needs a differnet handling
 * as the other set commands
 */
ECPGSetAutocommit:	SET SQL_AUTOCOMMIT '=' on_off	{ $$ = $4; }
		|  SET SQL_AUTOCOMMIT TO on_off   { $$ = $4; }
		;

on_off: ON				{ $$ = make_str("on"); }
		| OFF			{ $$ = make_str("off"); }
		;

/*
 * set the actual connection, this needs a differnet handling as the other
 * set commands
 */
ECPGSetConnection:	SET SQL_CONNECTION TO connection_object { $$ = $4; }
		| SET SQL_CONNECTION '=' connection_object { $$ = $4; }
		| SET SQL_CONNECTION  connection_object { $$ = $3; }
		;

/*
 * define a new type for embedded SQL
 */
ECPGTypedef: TYPE_P
		{
			/* reset this variable so we see if there was */
			/* an initializer specified */
			initializer = 0;
		}
		ECPGColLabelCommon IS var_type opt_array_bounds opt_reference
		{
			/* add entry to list */
			struct typedefs *ptr, *this;
			char *dimension = $6.index1;
			char *length = $6.index2;

			if (($5.type_enum == ECPGt_struct ||
				 $5.type_enum == ECPGt_union) &&
				initializer == 1)
				mmerror(PARSE_ERROR, ET_ERROR, "Initializer not allowed in EXEC SQL TYPE command");
			else
			{
				for (ptr = types; ptr != NULL; ptr = ptr->next)
				{
					if (strcmp($3, ptr->name) == 0)
						/* re-definition is a bug */
						mmerror(PARSE_ERROR, ET_ERROR, "Type %s already defined", $3);
				}

				adjust_array($5.type_enum, &dimension, &length, $5.type_dimension, $5.type_index, *$7?1:0, false);

				this = (struct typedefs *) mm_alloc(sizeof(struct typedefs));

				/* initial definition */
				this->next = types;
				this->name = $3;
				this->brace_level = braces_open;
				this->type = (struct this_type *) mm_alloc(sizeof(struct this_type));
				this->type->type_enum = $5.type_enum;
				this->type->type_str = mm_strdup($3);
				this->type->type_dimension = dimension; /* dimension of array */
				this->type->type_index = length;	/* length of string */
				this->type->type_sizeof = ECPGstruct_sizeof;
				this->struct_member_list = ($5.type_enum == ECPGt_struct || $5.type_enum == ECPGt_union) ?
					struct_member_list[struct_level] : NULL;

				if ($5.type_enum != ECPGt_varchar &&
					$5.type_enum != ECPGt_char &&
					$5.type_enum != ECPGt_unsigned_char &&
					atoi(this->type->type_index) >= 0)
					mmerror(PARSE_ERROR, ET_ERROR, "No multidimensional array support for simple data types");

				types = this;
			}

			if (auto_create_c == false)
				$$ = cat_str(7, make_str("/* exec sql type"), mm_strdup($3), make_str("is"), mm_strdup($5.type_str), mm_strdup($6.str), $7, make_str("*/"));
			else
				$$ = cat_str(6, make_str("typedef "), mm_strdup($5.type_str), *$7?make_str("*"):make_str(""), mm_strdup($6.str), mm_strdup($3), make_str(";"));
		}
		;

opt_reference: SQL_REFERENCE 		{ $$ = make_str("reference"); }
		| /*EMPTY*/		 			{ $$ = EMPTY; }
		;

/*
 * define the type of one variable for embedded SQL
 */
ECPGVar: SQL_VAR
		{
			/* reset this variable so we see if there was */
			/* an initializer specified */
			initializer = 0;
		}
		ColLabel IS var_type opt_array_bounds opt_reference
		{
			struct variable *p = find_variable($3);
			char *dimension = $6.index1;
			char *length = $6.index2;
			struct ECPGtype * type;

			if (($5.type_enum == ECPGt_struct ||
				 $5.type_enum == ECPGt_union) &&
				initializer == 1)
				mmerror(PARSE_ERROR, ET_ERROR, "Initializer not allowed in EXEC SQL VAR command");
			else
			{
				adjust_array($5.type_enum, &dimension, &length, $5.type_dimension, $5.type_index, *$7?1:0, false);

				switch ($5.type_enum)
				{
					case ECPGt_struct:
					case ECPGt_union:
						if (atoi(dimension) < 0)
							type = ECPGmake_struct_type(struct_member_list[struct_level], $5.type_enum, $5.type_sizeof);
						else
							type = ECPGmake_array_type(ECPGmake_struct_type(struct_member_list[struct_level], $5.type_enum,$5.type_sizeof), dimension);
						break;

					case ECPGt_varchar:
						if (atoi(dimension) == -1)
							type = ECPGmake_simple_type($5.type_enum, length);
						else
							type = ECPGmake_array_type(ECPGmake_simple_type($5.type_enum, length), dimension);
						break;

					case ECPGt_char:
					case ECPGt_unsigned_char:
						if (atoi(dimension) == -1)
							type = ECPGmake_simple_type($5.type_enum, length);
						else
							type = ECPGmake_array_type(ECPGmake_simple_type($5.type_enum, length), dimension);
						break;

					default:
						if (atoi(length) >= 0)
							mmerror(PARSE_ERROR, ET_ERROR, "No multidimensional array support for simple data types");

						if (atoi(dimension) < 0)
							type = ECPGmake_simple_type($5.type_enum, make_str("1"));
						else
							type = ECPGmake_array_type(ECPGmake_simple_type($5.type_enum, make_str("1")), dimension);
						break;
				}

				ECPGfree_type(p->type);
				p->type = type;
			}

			$$ = cat_str(7, make_str("/* exec sql var"), mm_strdup($3), make_str("is"), mm_strdup($5.type_str), mm_strdup($6.str), $7, make_str("*/"));
		}
		;

/*
 * whenever statement: decide what to do in case of error/no data found
 * according to SQL standards we lack: SQLSTATE, CONSTRAINT and SQLEXCEPTION
 */
ECPGWhenever: SQL_WHENEVER SQL_SQLERROR action
		{
			when_error.code = $<action>3.code;
			when_error.command = $<action>3.command;
			$$ = cat_str(3, make_str("/* exec sql whenever sqlerror "), $3.str, make_str("; */\n"));
		}
		| SQL_WHENEVER NOT SQL_FOUND action
		{
			when_nf.code = $<action>4.code;
			when_nf.command = $<action>4.command;
			$$ = cat_str(3, make_str("/* exec sql whenever not found "), $4.str, make_str("; */\n"));
		}
		| SQL_WHENEVER SQL_SQLWARNING action
		{
			when_warn.code = $<action>3.code;
			when_warn.command = $<action>3.command;
			$$ = cat_str(3, make_str("/* exec sql whenever sql_warning "), $3.str, make_str("; */\n"));
		}
		;

action : SQL_CONTINUE
		{
			$<action>$.code = W_NOTHING;
			$<action>$.command = NULL;
			$<action>$.str = make_str("continue");
		}
		| SQL_SQLPRINT
		{
			$<action>$.code = W_SQLPRINT;
			$<action>$.command = NULL;
			$<action>$.str = make_str("sqlprint");
		}
		| SQL_STOP
		{
			$<action>$.code = W_STOP;
			$<action>$.command = NULL;
			$<action>$.str = make_str("stop");
		}
		| SQL_GOTO name
		{
			$<action>$.code = W_GOTO;
			$<action>$.command = strdup($2);
			$<action>$.str = cat2_str(make_str("goto "), $2);
		}
		| SQL_GO TO name
		{
			$<action>$.code = W_GOTO;
			$<action>$.command = strdup($3);
			$<action>$.str = cat2_str(make_str("goto "), $3);
		}
		| DO name '(' c_args ')'
		{
			$<action>$.code = W_DO;
			$<action>$.command = cat_str(4, $2, make_str("("), $4, make_str(")"));
			$<action>$.str = cat2_str(make_str("do"), mm_strdup($<action>$.command));
		}
		| DO SQL_BREAK
		{
			$<action>$.code = W_BREAK;
			$<action>$.command = NULL;
			$<action>$.str = make_str("break");
		}
		| SQL_CALL name '(' c_args ')'
		{
			$<action>$.code = W_DO;
			$<action>$.command = cat_str(4, $2, make_str("("), $4, make_str(")"));
			$<action>$.str = cat2_str(make_str("call"), mm_strdup($<action>$.command));
		}
		| SQL_CALL name 
		{
			$<action>$.code = W_DO;
			$<action>$.command = cat_str(3, $2, make_str("("), make_str(")"));
			$<action>$.str = cat2_str(make_str("call"), mm_strdup($<action>$.command));
		}
		;

/* some other stuff for ecpg */

/* additional unreserved keywords */
ECPGKeywords: ECPGKeywords_vanames	{ $$ = $1; }
		| ECPGKeywords_rest 	{ $$ = $1; }
		;

ECPGKeywords_vanames:  SQL_BREAK		{ $$ = make_str("break"); }
		| SQL_CALL			{ $$ = make_str("call"); }
		| SQL_CARDINALITY		{ $$ = make_str("cardinality"); }
		| SQL_CONTINUE			{ $$ = make_str("continue"); }
		| SQL_COUNT			{ $$ = make_str("count"); }
		| SQL_DATA			{ $$ = make_str("data"); }
		| SQL_DATETIME_INTERVAL_CODE	{ $$ = make_str("datetime_interval_code"); }
		| SQL_DATETIME_INTERVAL_PRECISION	{ $$ = make_str("datetime_interval_precision"); }
		| SQL_FOUND			{ $$ = make_str("found"); }
		| SQL_GO			{ $$ = make_str("go"); }
		| SQL_GOTO			{ $$ = make_str("goto"); }
		| SQL_IDENTIFIED		{ $$ = make_str("identified"); }
		| SQL_INDICATOR			{ $$ = make_str("indicator"); }
		| SQL_KEY_MEMBER		{ $$ = make_str("key_member"); }
		| SQL_LENGTH			{ $$ = make_str("length"); }
		| SQL_NAME			{ $$ = make_str("name"); }
		| SQL_NULLABLE			{ $$ = make_str("nullable"); }
		| SQL_OCTET_LENGTH		{ $$ = make_str("octet_length"); }
		| SQL_RELEASE			{ $$ = make_str("release"); }
		| SQL_RETURNED_LENGTH		{ $$ = make_str("returned_length"); }
		| SQL_RETURNED_OCTET_LENGTH	{ $$ = make_str("returned_octet_length"); }
		| SQL_SCALE			{ $$ = make_str("scale"); }
		| SQL_SECTION			{ $$ = make_str("section"); }
		| SQL_SQLERROR			{ $$ = make_str("sqlerror"); }
		| SQL_SQLPRINT			{ $$ = make_str("sqlprint"); }
		| SQL_SQLWARNING		{ $$ = make_str("sqlwarning"); }
		| SQL_STOP			{ $$ = make_str("stop"); }
		;
		
ECPGKeywords_rest:  SQL_CONNECT			{ $$ = make_str("connect"); }
		| SQL_DESCRIBE			{ $$ = make_str("describe"); }
		| SQL_DISCONNECT		{ $$ = make_str("disconnect"); }
		| SQL_OPEN			{ $$ = make_str("open"); }
		| SQL_VAR			{ $$ = make_str("var"); }
		| SQL_WHENEVER			{ $$ = make_str("whenever"); }
		;

/* additional keywords that can be SQL type names (but not ECPGColLabels) */
ECPGTypeName:  SQL_BOOL				{ $$ = make_str("bool"); }
		| SQL_LONG			{ $$ = make_str("long"); }
		| SQL_OUTPUT			{ $$ = make_str("output"); }
		| SQL_SHORT			{ $$ = make_str("short"); }
		| SQL_STRUCT			{ $$ = make_str("struct"); }
		| SQL_SIGNED			{ $$ = make_str("signed"); }
		| SQL_UNSIGNED			{ $$ = make_str("unsigned"); }
		;

symbol: ColLabel				{ $$ = $1; }
		;

/*
 * Name classification hierarchy.
 *
 * IDENT is the lexeme returned by the lexer for identifiers that match
 * no known keyword.  In most cases, we can accept certain keywords as
 * names, not only IDENTs.	We prefer to accept as many such keywords
 * as possible to minimize the impact of "reserved words" on programmers.
 * So, we divide names into several possible classes.  The classification
 * is chosen in part to make keywords acceptable as names wherever possible.
 */

/* Column identifier --- names that can be column, table, etc names.
 */
ColId:	ident						{ $$ = $1; }
		| unreserved_keyword			{ $$ = $1; }
		| col_name_keyword			{ $$ = $1; }
		| ECPGKeywords				{ $$ = $1; }
		| ECPGCKeywords				{ $$ = $1; }
		| CHAR_P				{ $$ = make_str("char"); }
		;

/* Type identifier --- names that can be type names.
 */
type_name:	ident					{ $$ = $1; }
		| unreserved_keyword			{ $$ = $1; }
		| ECPGKeywords				{ $$ = $1; }
		| ECPGTypeName				{ $$ = $1; }
		| ECPGCKeywords				{ $$ = $1; }
		;

/* Function identifier --- names that can be function names.
 */
function_name:	ident					{ $$ = $1; }
		| unreserved_keyword			{ $$ = $1; }
		| func_name_keyword			{ $$ = $1; }
		| ECPGKeywords				{ $$ = $1; }
		| ECPGCKeywords				{ $$ = $1; }
		;

/* Column label --- allowed labels in "AS" clauses.
 * This presently includes *all* Postgres keywords.
 */
ColLabel:  ECPGColLabel				{ $$ = $1; }
		| ECPGTypeName			{ $$ = $1; }
		| CHAR_P			{ $$ = make_str("char"); }
		| INPUT_P			{ $$ = make_str("input"); }
		| INT_P				{ $$ = make_str("int"); }
		| UNION				{ $$ = make_str("union"); }
		| TO				{ $$ = make_str("to"); }
		| ECPGCKeywords			{ $$ = $1; }
		| ECPGunreserved_interval	{ $$ = $1; }
		;

ECPGColLabelCommon:  ident                              { $$ = $1; }
                | col_name_keyword                      { $$ = $1; }
                | func_name_keyword                     { $$ = $1; }
		| ECPGKeywords_vanames			{ $$ = $1; }
                ;
		
ECPGColLabel:  ECPGColLabelCommon			{ $$ = $1; }
		| reserved_keyword			{ $$ = $1; }
		| ECPGunreserved			{ $$ = $1; }
		| ECPGKeywords_rest			{ $$ = $1; }
		;

ECPGCKeywords: S_AUTO			{ $$ = make_str("auto"); }
		| S_CONST		{ $$ = make_str("const"); }
		| S_EXTERN		{ $$ = make_str("extern"); }
		| S_REGISTER		{ $$ = make_str("register"); }
		| S_STATIC		{ $$ = make_str("static"); }
		| S_TYPEDEF		{ $$ = make_str("typedef"); }
		| S_VOLATILE		{ $$ = make_str("volatile"); }
		;
	
/*
 * Keyword classification lists.  Generally, every keyword present in
 * the Postgres grammar should appear in exactly one of these lists.
 *
 * Put a new keyword into the first list that it can go into without causing
 * shift or reduce conflicts.  The earlier lists define "less reserved"
 * categories of keywords.
 */

/* "Unreserved" keywords --- available for use as any kind of name.
 */
/* The following symbols must be excluded from ECPGColLabel and directly included into ColLabel
   to enable C variables to get names from ECPGColLabel:
   DAY_P, HOUR_P, MINUTE_P, MONTH_P, SECOND_P, YEAR_P
 */
unreserved_keyword: ECPGunreserved_interval | ECPGunreserved;

ECPGunreserved_interval: DAY_P				{ $$ = make_str("day"); }
		| HOUR_P			{ $$ = make_str("hour"); }
		| MINUTE_P			{ $$ = make_str("minute"); }
		| MONTH_P			{ $$ = make_str("month"); }
		| SECOND_P			{ $$ = make_str("second"); }
		| YEAR_P			{ $$ = make_str("year"); }
		;
		
ECPGunreserved:	  ABORT_P			{ $$ = make_str("abort"); }
		| ABSOLUTE_P			{ $$ = make_str("absolute"); }
		| ACCESS			{ $$ = make_str("access"); }
		| ACTION			{ $$ = make_str("action"); }
		| ADD				{ $$ = make_str("add"); }
		| AFTER				{ $$ = make_str("after"); }
		| AGGREGATE			{ $$ = make_str("aggregate"); }
		| ALTER				{ $$ = make_str("alter"); }
		| ASSERTION			{ $$ = make_str("assertion"); }
		| ASSIGNMENT			{ $$ = make_str("assignment"); }
		| AT				{ $$ = make_str("at"); }
		| BACKWARD			{ $$ = make_str("backward"); }
		| BEFORE			{ $$ = make_str("before"); }
		| BEGIN_P			{ $$ = make_str("begin"); }
		| BY				{ $$ = make_str("by"); }
		| CACHE				{ $$ = make_str("cache"); }
		| CASCADE			{ $$ = make_str("cascade"); }
		| CHAIN				{ $$ = make_str("chain"); }
		| CHARACTERISTICS		{ $$ = make_str("characteristics"); }
		| CHECKPOINT			{ $$ = make_str("checkpoint"); }
		| CLASS				{ $$ = make_str("class"); }
		| CLOSE				{ $$ = make_str("close"); }
		| CLUSTER			{ $$ = make_str("cluster"); }
		| COMMENT			{ $$ = make_str("comment"); }
		| COMMIT			{ $$ = make_str("commit"); }
		| COMMITTED			{ $$ = make_str("committed"); }
		| CONSTRAINTS			{ $$ = make_str("constraints"); }
		| CONVERSION_P			{ $$ = make_str("conversion"); }
		| COPY				{ $$ = make_str("copy"); }
		| CREATEDB			{ $$ = make_str("createdb"); }
		| CREATEUSER			{ $$ = make_str("createuser"); }
		| CSV				{ $$ = make_str("csv"); }
		| CURSOR			{ $$ = make_str("cursor"); }
		| CYCLE				{ $$ = make_str("cycle"); }
		| DATABASE			{ $$ = make_str("database"); }
/*		| DAY_P				{ $$ = make_str("day"); }*/
		| DEALLOCATE			{ $$ = make_str("deallocate"); }
		| DECLARE			{ $$ = make_str("declare"); }
		| DEFAULTS			{ $$ = make_str("defaults"); }
		| DEFERRED			{ $$ = make_str("deferred"); }
		| DELETE_P			{ $$ = make_str("delete"); }
		| DELIMITER			{ $$ = make_str("delimiter"); }
		| DELIMITERS			{ $$ = make_str("delimiters"); }
		| DOMAIN_P			{ $$ = make_str("domain"); }
		| DOUBLE_P			{ $$ = make_str("double"); }
		| DROP				{ $$ = make_str("drop"); }
		| EACH				{ $$ = make_str("each"); }
		| ENCODING			{ $$ = make_str("encoding"); }
		| ENCRYPTED			{ $$ = make_str("encrypted"); }
		| ESCAPE			{ $$ = make_str("escape"); }
		| EXCLUDING			{ $$ = make_str("excluding"); }
		| EXCLUSIVE			{ $$ = make_str("exclusive"); }
		| EXECUTE			{ $$ = make_str("execute"); }
		| EXPLAIN			{ $$ = make_str("explain"); }
		| FETCH				{ $$ = make_str("fetch"); }
		| FIRST_P			{ $$ = make_str("first"); }
		| FORCE				{ $$ = make_str("force"); }
		| FORWARD			{ $$ = make_str("forward"); }
		| FUNCTION			{ $$ = make_str("function"); }
		| GLOBAL			{ $$ = make_str("global"); }
		| HANDLER			{ $$ = make_str("handler"); }
		| HOLD				{ $$ = make_str("hold"); }
/*		| HOUR_P			{ $$ = make_str("hour"); }*/
		| IMMEDIATE			{ $$ = make_str("immediate"); }
		| IMMUTABLE			{ $$ = make_str("immutable"); }
		| IMPLICIT_P			{ $$ = make_str("implicit"); }
		| INCLUDING			{ $$ = make_str("including"); }
		| INCREMENT			{ $$ = make_str("increment"); }
		| INDEX				{ $$ = make_str("index"); }
		| INHERITS			{ $$ = make_str("inherits"); }
		| INSENSITIVE			{ $$ = make_str("insensitive"); }
		| INSERT			{ $$ = make_str("insert"); }
		| INSTEAD			{ $$ = make_str("instead"); }
		| ISOLATION			{ $$ = make_str("isolation"); }
		| KEY				{ $$ = make_str("key"); }
		| LANCOMPILER			{ $$ = make_str("lancompiler"); }
		| LANGUAGE			{ $$ = make_str("language"); }
		| LARGE_P			{ $$ = make_str("large"); }
		| LAST_P			{ $$ = make_str("last"); }
		| LEVEL				{ $$ = make_str("level"); }
		| LISTEN			{ $$ = make_str("listen"); }
		| LOAD				{ $$ = make_str("load"); }
		| LOCAL				{ $$ = make_str("local"); }
		| LOCATION			{ $$ = make_str("location"); }
		| LOCK_P			{ $$ = make_str("lock"); }
		| MATCH				{ $$ = make_str("match"); }
		| MAXVALUE			{ $$ = make_str("maxvalue"); }
/*		| MINUTE_P			{ $$ = make_str("minute"); }*/
		| MINVALUE			{ $$ = make_str("minvalue"); }
		| MODE				{ $$ = make_str("mode"); }
/*		| MONTH_P			{ $$ = make_str("month"); }*/
		| MOVE				{ $$ = make_str("move"); }
		| NAMES				{ $$ = make_str("names"); }
		| NEXT				{ $$ = make_str("next"); }
		| NO				{ $$ = make_str("no"); }
		| NOCREATEDB			{ $$ = make_str("nocreatedb"); }
		| NOCREATEUSER			{ $$ = make_str("nocreateuser"); }
		| NOTHING			{ $$ = make_str("nothing"); }
		| NOTIFY			{ $$ = make_str("notify"); }
		| OBJECT_P			{ $$ = make_str("object"); }
		| OF				{ $$ = make_str("of"); }
		| OIDS				{ $$ = make_str("oids"); }
		| OPERATOR			{ $$ = make_str("operator"); }
		| OPTION			{ $$ = make_str("option"); }
		| OWNER				{ $$ = make_str("owner"); }
		| PARTIAL			{ $$ = make_str("partial"); }
		| PASSWORD			{ $$ = make_str("password"); }
		| PATH_P			{ $$ = make_str("path"); }
		| PENDANT			{ $$ = make_str("pendant"); }
		| PREPARE			{ $$ = make_str("prepare"); }
		| PRESERVE			{ $$ = make_str("preserver"); }
		| PRIOR				{ $$ = make_str("prior"); }
		| PRIVILEGES			{ $$ = make_str("privileges"); }
		| PROCEDURAL			{ $$ = make_str("procedural"); }
		| PROCEDURE			{ $$ = make_str("procedure"); }
		| QUOTE				{ $$ = make_str("quote"); }
		| READ				{ $$ = make_str("read"); }
		| RECHECK			{ $$ = make_str("recheck"); }
		| REINDEX			{ $$ = make_str("reindex"); }
		| RELATIVE_P			{ $$ = make_str("relative"); }
		| RENAME			{ $$ = make_str("rename"); }
		| REPEATABLE			{ $$ = make_str("repeatable"); }
		| REPLACE			{ $$ = make_str("replace"); }
		| RESET				{ $$ = make_str("reset"); }
		| RESTART			{ $$ = make_str("restart"); }
		| RESTRICT			{ $$ = make_str("restrict"); }
		| RETURNS			{ $$ = make_str("returns"); }
		| REVOKE			{ $$ = make_str("revoke"); }
		| ROLLBACK			{ $$ = make_str("rollback"); }
		| ROWS				{ $$ = make_str("rows"); }
		| RULE				{ $$ = make_str("rule"); }
		| SCHEMA			{ $$ = make_str("schema"); }
		| SCROLL			{ $$ = make_str("scroll"); }
/*		| SECOND_P			{ $$ = make_str("second"); }*/
		| SEQUENCE			{ $$ = make_str("sequence"); }
		| SERIALIZABLE			{ $$ = make_str("serializable"); }
		| SESSION			{ $$ = make_str("session"); }
		| SET				{ $$ = make_str("set"); }
		| SHARE				{ $$ = make_str("share"); }
		| SHOW				{ $$ = make_str("show"); }
		| SIMPLE			{ $$ = make_str("simple"); }
		| STABLE			{ $$ = make_str("stable"); }
		| START				{ $$ = make_str("start"); }
		| STATEMENT			{ $$ = make_str("statement"); }
		| STATISTICS			{ $$ = make_str("statistics"); }
		| STDIN				{ $$ = make_str("stdin"); }
		| STDOUT			{ $$ = make_str("stdout"); }
		| STORAGE			{ $$ = make_str("storage"); }
		| STRICT_P			{ $$ = make_str("strict"); }
		| SYSID				{ $$ = make_str("sysid"); }
		| TABLESPACE			{ $$ = make_str("tablespace"); }
		| TEMP				{ $$ = make_str("temp"); }
		| TEMPLATE			{ $$ = make_str("template"); }
		| TEMPORARY			{ $$ = make_str("temporary"); }
		| TOAST				{ $$ = make_str("toast"); }
		| TRANSACTION			{ $$ = make_str("transaction"); }
		| TRIGGER			{ $$ = make_str("trigger"); }
		| TRUNCATE			{ $$ = make_str("truncate"); }
		| TRUSTED			{ $$ = make_str("trusted"); }
		| TYPE_P			{ $$ = make_str("type"); }
		| UNCOMMITTED			{ $$ = make_str("uncommitted"); }
		| UNENCRYPTED			{ $$ = make_str("unencrypted"); }
		| UNKNOWN			{ $$ = make_str("unknown"); }
		| UNLISTEN			{ $$ = make_str("unlisten"); }
		| UNTIL				{ $$ = make_str("until"); }
		| UPDATE			{ $$ = make_str("update"); }
		| USAGE				{ $$ = make_str("usage"); }
		| VACUUM			{ $$ = make_str("vacuum"); }
		| VALID				{ $$ = make_str("valid"); }
		| VALUES			{ $$ = make_str("values"); }
		| VARYING			{ $$ = make_str("varying"); }
		| VERSION			{ $$ = make_str("version"); }
		| VIEW				{ $$ = make_str("view"); }
		| WITH				{ $$ = make_str("with"); }
		| WITHOUT			{ $$ = make_str("without"); }
		| WORK				{ $$ = make_str("work"); }
		| WRITE  			{ $$ = make_str("write"); }
/*		| YEAR_P			{ $$ = make_str("year"); }*/
		| ZONE				{ $$ = make_str("zone"); }
		;

/* Column identifier --- keywords that can be column, table, etc names.
 *
 * Many of these keywords will in fact be recognized as type or function
 * names too; but they have special productions for the purpose, and so
 * can't be treated as "generic" type or function names.
 *
 * The type names appearing here are not usable as function names
 * because they can be followed by '(' in typename productions, which
 * looks too much like a function call for an LR(1) parser.
 */
col_name_keyword:
		BIGINT			{ $$ = make_str("bigint");}
		| BIT			{ $$ = make_str("bit"); }
/* CHAR must be excluded from ECPGColLabel because of conflict with UNSIGNED
		| CHAR_P		{ $$ = make_str("char"); }
 */
		| CHARACTER		{ $$ = make_str("character"); }
		| COALESCE		{ $$ = make_str("coalesce"); }
		| CONVERT		{ $$ = make_str("convert"); }
		| DEC			{ $$ = make_str("dec"); }
		| DECIMAL_P		{ $$ = make_str("decimal"); }
		| EXISTS		{ $$ = make_str("exists"); }
		| EXTRACT		{ $$ = make_str("extract"); }
		| FLOAT_P		{ $$ = make_str("float"); }
		| INOUT			{ $$ = make_str("inout"); }
/* INT must be excluded from ECPGColLabel because of conflict
		| INT_P			{ $$ = make_str("int"); }
 */
		| INTEGER 		{ $$ = make_str("integer"); }
		| INTERVAL		{ $$ = make_str("interval"); }
		| NATIONAL		{ $$ = make_str("national"); }
		| NCHAR			{ $$ = make_str("nchar"); }
		| NONE			{ $$ = make_str("none"); }
		| NULLIF		{ $$ = make_str("nullif"); }
		| NUMERIC		{ $$ = make_str("numeric"); }
		| OUT_P			{ $$ = make_str("out"); }
		| OVERLAY		{ $$ = make_str("overlay"); }
		| POSITION		{ $$ = make_str("position"); }
		| PRECISION		{ $$ = make_str("precision"); }
		| REAL			{ $$ = make_str("real"); }
		| ROW 			{ $$ = make_str("row"); }
		| SETOF			{ $$ = make_str("setof"); }
		| SMALLINT		{ $$ = make_str("smallint"); }
		| SUBSTRING		{ $$ = make_str("substring"); }
		| TIME			{ $$ = make_str("time"); }
		| TIMESTAMP		{ $$ = make_str("timestamp"); }
		| TREAT    		{ $$ = make_str("treat"); }
		| TRIM			{ $$ = make_str("trim"); }
		| VARCHAR		{ $$ = make_str("varchar"); }
		;

/* Function identifier --- keywords that can be function names.
 *
 * Most of these are keywords that are used as operators in expressions;
 * in general such keywords can't be column names because they would be
 * ambiguous with variables, but they are unambiguous as function identifiers.
 *
 * Do not include POSITION, SUBSTRING, etc here since they have explicit
 * productions in a_expr to support the goofy SQL9x argument syntax.
 *	- thomas 2000-11-28
 */
func_name_keyword:
		  AUTHORIZATION		{ $$ = make_str("authorization"); }
		| BETWEEN		{ $$ = make_str("between"); }
		| BINARY		{ $$ = make_str("binary"); }
		| CROSS			{ $$ = make_str("cross"); }
		| FREEZE		{ $$ = make_str("freeze"); }
		| FULL			{ $$ = make_str("full"); }
		| ILIKE			{ $$ = make_str("ilike"); }
		| INNER_P		{ $$ = make_str("inner"); }
		| IS			{ $$ = make_str("is"); }
		| ISNULL		{ $$ = make_str("isnull"); }
		| JOIN			{ $$ = make_str("join"); }
		| LEFT			{ $$ = make_str("left"); }
		| LIKE			{ $$ = make_str("like"); }
		| NATURAL		{ $$ = make_str("natural"); }
		| NOTNULL		{ $$ = make_str("notnull"); }
		| OUTER_P		{ $$ = make_str("outer"); }
		| OVERLAPS		{ $$ = make_str("overlaps"); }
		| RIGHT			{ $$ = make_str("right"); }
		| SIMILAR		{ $$ = make_str("similar"); }
		| VERBOSE		{ $$ = make_str("verbose"); }
		;

/* Reserved keyword --- these keywords are usable only as a ColLabel.
 *
 * Keywords appear here if they could not be distinguished from variable,
 * type, or function names in some contexts.  Don't put things here unless
 * forced to.
 */
reserved_keyword:
		  ALL				{ $$ = make_str("all"); }
		| ANALYSE			{ $$ = make_str("analyse"); } /* British */
		| ANALYZE			{ $$ = make_str("analyze"); }
		| AND				{ $$ = make_str("and"); }
		| ANY				{ $$ = make_str("any"); }
		| ARRAY				{ $$ = make_str("array"); }
		| AS				{ $$ = make_str("as"); }
		| ASC				{ $$ = make_str("asc"); }
		| BOTH				{ $$ = make_str("both"); }
		| CASE				{ $$ = make_str("case"); }
		| CAST				{ $$ = make_str("cast"); }
		| CHECK				{ $$ = make_str("check"); }
		| COLLATE			{ $$ = make_str("collate"); }
		| COLUMN			{ $$ = make_str("column"); }
		| CONSTRAINT			{ $$ = make_str("constraint"); }
		| CREATE			{ $$ = make_str("create"); }
		| CURRENT_DATE			{ $$ = make_str("current_date"); }
		| CURRENT_TIME			{ $$ = make_str("current_time"); }
		| CURRENT_TIMESTAMP		{ $$ = make_str("current_timestamp"); }
		| CURRENT_USER			{ $$ = make_str("current_user"); }
		| DEFAULT			{ $$ = make_str("default"); }
		| DEFERRABLE			{ $$ = make_str("deferrable"); }
		| DESC				{ $$ = make_str("desc"); }
		| DISTINCT			{ $$ = make_str("distinct"); }
		| DO				{ $$ = make_str("do"); }
		| ELSE				{ $$ = make_str("else"); }
		| END_P				{ $$ = make_str("end"); }
		| EXCEPT			{ $$ = make_str("except"); }
		| FALSE_P			{ $$ = make_str("false"); }
		| FOR				{ $$ = make_str("for"); }
		| FOREIGN			{ $$ = make_str("foreign"); }
		| FROM				{ $$ = make_str("from"); }
		| GRANT				{ $$ = make_str("grant"); }
		| GROUP_P			{ $$ = make_str("group"); }
		| HAVING			{ $$ = make_str("having"); }
		| IN_P				{ $$ = make_str("in"); }
		| INITIALLY			{ $$ = make_str("initially"); }
		| INTERSECT			{ $$ = make_str("intersect"); }
		| INTO				{ $$ = make_str("into"); }
		| LEADING			{ $$ = make_str("leading"); }
		| LIMIT				{ $$ = make_str("limit"); }
		| NEW				{ $$ = make_str("new"); }
		| NOT				{ $$ = make_str("not"); }
		| NOWAIT			{ $$ = make_str("nowait"); }
		| NULL_P			{ $$ = make_str("null"); }
		| OFF				{ $$ = make_str("off"); }
		| OFFSET			{ $$ = make_str("offset"); }
		| OLD				{ $$ = make_str("old"); }
		| ON				{ $$ = make_str("on"); }
		| ONLY				{ $$ = make_str("only"); }
		| OR				{ $$ = make_str("or"); }
		| ORDER				{ $$ = make_str("order"); }
		| PRIMARY			{ $$ = make_str("primary"); }
		| REFERENCES			{ $$ = make_str("references"); }
		| SELECT			{ $$ = make_str("select"); }
		| SESSION_USER			{ $$ = make_str("session_user"); }
		| SOME				{ $$ = make_str("some"); }
		| TABLE				{ $$ = make_str("table"); }
		| THEN				{ $$ = make_str("then"); }
/* TO must be excluded from ECPGColLabel because of a conflict in variable name parsing
		| TO				{ $$ = make_str("to"); }
 */
		| TRAILING			{ $$ = make_str("trailing"); }
		| TRUE_P			{ $$ = make_str("true"); }
/* UNION must be excluded from ECPGColLabel because of conflict with s_union
		| UNION				{ $$ = make_str("union"); }
 */
		| UNIQUE			{ $$ = make_str("unique"); }
		| USER				{ $$ = make_str("user"); }
		| USING				{ $$ = make_str("using"); }
		| WHEN				{ $$ = make_str("when"); }
		| WHERE				{ $$ = make_str("where"); }
		;


into_list : coutputvariable | into_list ',' coutputvariable
		;

ecpgstart: SQL_START	{ reset_variables(); }
		;

c_args: /*EMPTY*/		{ $$ = EMPTY; }
		| c_list		{ $$ = $1; }
		;

coutputvariable: cvariable indicator
			{ add_variable_to_head(&argsresult, find_variable($1), find_variable($2)); }
		| cvariable
			{ add_variable_to_head(&argsresult, find_variable($1), &no_indicator); }
		;


civarind: cvariable indicator
		{
			if (find_variable($2)->type->type == ECPGt_array)
				mmerror(PARSE_ERROR, ET_ERROR, "arrays of indicators are not allowed on input");

			add_variable_to_head(&argsinsert, find_variable($1), find_variable($2));
			$$ = create_questionmarks($1, false);
		}
		;

civar: cvariable
			{
				add_variable_to_head(&argsinsert, find_variable($1), &no_indicator);
				$$ = create_questionmarks($1, false);
			}
		;

indicator: cvariable				{ check_indicator((find_variable($1))->type); $$ = $1; }
		| SQL_INDICATOR cvariable	{ check_indicator((find_variable($2))->type); $$ = $2; }
		| SQL_INDICATOR name		{ check_indicator((find_variable($2))->type); $$ = $2; }
		;

cvariable:	CVARIABLE 
		{
			/* As long as multidimensional arrays are not implemented we have to check for those here */
			char *ptr = $1;
			int brace_open=0, brace = false;
			
			for (; *ptr; ptr++)
			{
				switch (*ptr)
				{
					case '[':	if (brace)
							{
								mmerror(PARSE_ERROR, ET_FATAL, "No multidimensional array support for simple data types");
							}
							brace_open++;
							break;
					case ']': 	brace_open--;
							if (brace_open == 0) brace = true;
							break;
					case '\t':
					case ' ':	break;
					default:	if (brace_open == 0) brace = false;
							break;
				}
			}

			$$ = $1;
		}
		;
ident: IDENT					{ $$ = $1; }
		| CSTRING			{ $$ = make3_str(make_str("\""), $1, make_str("\"")); }
		;

quoted_ident_stringvar: name
			{ $$ = make3_str(make_str("\""), $1, make_str("\"")); }
		| char_variable
			{ $$ = make3_str(make_str("("), $1, make_str(")")); }
		;

/*
 * C stuff
 */

c_stuff_item: c_anything			{ $$ = $1; }
		| '(' ')'			{ $$ = make_str("()"); }
		| '(' c_stuff ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		;

c_stuff: c_stuff_item	{ $$ = $1; }
		| c_stuff c_stuff_item
			{ $$ = cat2_str($1, $2); }
		;

c_list: c_term				{ $$ = $1; }
		| c_list ',' c_term	{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

c_term:  c_stuff			{ $$ = $1; }
		| '{' c_list '}'	{ $$ = cat_str(3, make_str("{"), $2, make_str("}")); }
		;

c_thing:	c_anything	{ $$ = $1; }
		|	'('	{ $$ = make_str("("); }
		|	')'	{ $$ = make_str(")"); }
		|	','	{ $$ = make_str(","); }
		|	';'	{ $$ = make_str(";"); }
		;

c_anything:  IDENT				{ $$ = $1; }
		| CSTRING			{ $$ = make3_str(make_str("\""), $1, make_str("\"")); }
		| Iconst			{ $$ = $1; }
		| Fconst			{ $$ = $1; }
		| Sconst			{ $$ = $1; }
		| '*'				{ $$ = make_str("*"); }
		| '+'				{ $$ = make_str("+"); }
		| '-'				{ $$ = make_str("-"); }
		| '/'				{ $$ = make_str("/"); }
		| '%'				{ $$ = make_str("%"); }
		| NULL_P			{ $$ = make_str("NULL"); }
		| S_ADD				{ $$ = make_str("+="); }
		| S_AND				{ $$ = make_str("&&"); }
		| S_ANYTHING			{ $$ = make_name(); }
		| S_AUTO			{ $$ = make_str("auto"); }
		| S_CONST			{ $$ = make_str("const"); }
		| S_DEC				{ $$ = make_str("--"); }
		| S_DIV				{ $$ = make_str("/="); }
		| S_DOTPOINT			{ $$ = make_str(".*"); }
		| S_EQUAL			{ $$ = make_str("=="); }
		| S_EXTERN			{ $$ = make_str("extern"); }
		| S_INC				{ $$ = make_str("++"); }
		| S_LSHIFT			{ $$ = make_str("<<"); }
		| S_MEMBER			{ $$ = make_str("->"); }
		| S_MEMPOINT			{ $$ = make_str("->*"); }
		| S_MOD				{ $$ = make_str("%="); }
		| S_MUL				{ $$ = make_str("*="); }
		| S_NEQUAL			{ $$ = make_str("!="); }
		| S_OR				{ $$ = make_str("||"); }
		| S_REGISTER			{ $$ = make_str("register"); }
		| S_RSHIFT			{ $$ = make_str(">>"); }
		| S_STATIC			{ $$ = make_str("static"); }
		| S_SUB				{ $$ = make_str("-="); }
		| S_TYPEDEF			{ $$ = make_str("typedef"); }
		| S_VOLATILE			{ $$ = make_str("volatile"); }
		| SQL_BOOL			{ $$ = make_str("bool"); }
		| SQL_ENUM			{ $$ = make_str("enum"); }
		| HOUR_P			{ $$ = make_str("hour"); }
		| INT_P				{ $$ = make_str("int"); }
		| SQL_LONG			{ $$ = make_str("long"); }
		| MINUTE_P			{ $$ = make_str("minute"); }
		| MONTH_P			{ $$ = make_str("month"); }
		| SECOND_P			{ $$ = make_str("second"); }
		| SQL_SHORT			{ $$ = make_str("short"); }
		| SQL_SIGNED			{ $$ = make_str("signed"); }
		| SQL_STRUCT			{ $$ = make_str("struct"); }
		| SQL_UNSIGNED			{ $$ = make_str("unsigned"); }
		| YEAR_P			{ $$ = make_str("year"); }
		| CHAR_P			{ $$ = make_str("char"); }
		| FLOAT_P			{ $$ = make_str("float"); }
		| TO				{ $$ = make_str("to"); }
		| UNION				{ $$ = make_str("union"); }
		| VARCHAR			{ $$ = make_str("varchar"); }
		| '['				{ $$ = make_str("["); }
		| ']'				{ $$ = make_str("]"); }
		| '='				{ $$ = make_str("="); }
		;

%%

void yyerror( char * error)
{
	char buf[1024];

	snprintf(buf,sizeof buf,"%s at or near \"%s\"", error, token_start ? token_start : yytext);
	buf[sizeof(buf)-1]=0;
	mmerror(PARSE_ERROR, ET_ERROR, buf);
}

#include "pgc.c"
