
/* Module:          info.c
 *
 * Description:     This module contains routines related to
 *                  ODBC informational functions.
 *
 * Classes:         n/a
 *
 * API functions:   SQLGetInfo, SQLGetTypeInfo, SQLGetFunctions, 
 *                  SQLTables, SQLColumns, SQLStatistics, SQLSpecialColumns,
 *                  SQLPrimaryKeys, SQLForeignKeys, 
 *                  SQLProcedureColumns(NI), SQLProcedures(NI), 
 *                  SQLTablePrivileges(NI), SQLColumnPrivileges(NI)
 *
 * Comments:        See "notice.txt" for copyright and license information.
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <string.h>
#include <stdio.h>
#include "psqlodbc.h"

#ifndef WIN32
#include "iodbc.h"
#include "isql.h"
#include "isqlext.h"
#include <ctype.h>	/* for tolower function */
#else
#include <windows.h>
#include <sql.h> 
#include <sqlext.h>
#endif

#include "tuple.h"
#include "pgtypes.h"

#include "environ.h"
#include "connection.h"
#include "statement.h"
#include "qresult.h"
#include "bind.h"
#include "misc.h"
#include "pgtypes.h"


/*	Trigger related stuff for SQLForeign Keys */
#define TRIGGER_SHIFT 3
#define TRIGGER_MASK   0x03
#define TRIGGER_DELETE 0x01
#define TRIGGER_UPDATE 0x02


extern GLOBAL_VALUES globals;


/*      -       -       -       -       -       -       -       -       - */

RETCODE SQL_API SQLGetInfo(
        HDBC      hdbc,
        UWORD     fInfoType,
        PTR       rgbInfoValue,
        SWORD     cbInfoValueMax,
        SWORD FAR *pcbInfoValue)
{
static char *func = "SQLGetInfo";
ConnectionClass *conn = (ConnectionClass *) hdbc;
ConnInfo *ci;
char *p = NULL;
int len = 0, value = 0;
RETCODE result;

	mylog( "%s: entering...fInfoType=%d\n", func, fInfoType);

	if ( ! conn) {
		CC_log_error(func, "", NULL);
		return SQL_INVALID_HANDLE;
	}

	ci = &conn->connInfo;

    switch (fInfoType) {
    case SQL_ACCESSIBLE_PROCEDURES: /* ODBC 1.0 */
		p = "N";
        break;

    case SQL_ACCESSIBLE_TABLES: /* ODBC 1.0 */
		p = "N";
        break;

    case SQL_ACTIVE_CONNECTIONS: /* ODBC 1.0 */
        len = 2;
        value = MAX_CONNECTIONS;
        break;

    case SQL_ACTIVE_STATEMENTS: /* ODBC 1.0 */
        len = 2;
        value = 0;
        break;

    case SQL_ALTER_TABLE: /* ODBC 2.0 */
        len = 4;
        value = SQL_AT_ADD_COLUMN;
        break;

    case SQL_BOOKMARK_PERSISTENCE: /* ODBC 2.0 */
		/* very simple bookmark support */        
		len = 4;
        value = globals.use_declarefetch ? 0 : (SQL_BP_SCROLL);		
        break;

    case SQL_COLUMN_ALIAS: /* ODBC 2.0 */
		p = "N";
        break;

    case SQL_CONCAT_NULL_BEHAVIOR: /* ODBC 1.0 */
        len = 2;
        value = SQL_CB_NON_NULL;
        break;

    case SQL_CONVERT_BIGINT:
    case SQL_CONVERT_BINARY:
    case SQL_CONVERT_BIT:
    case SQL_CONVERT_CHAR:
    case SQL_CONVERT_DATE:
    case SQL_CONVERT_DECIMAL:
    case SQL_CONVERT_DOUBLE:
    case SQL_CONVERT_FLOAT:
    case SQL_CONVERT_INTEGER:
    case SQL_CONVERT_LONGVARBINARY:
    case SQL_CONVERT_LONGVARCHAR:
    case SQL_CONVERT_NUMERIC:
    case SQL_CONVERT_REAL:
    case SQL_CONVERT_SMALLINT:
    case SQL_CONVERT_TIME:
    case SQL_CONVERT_TIMESTAMP:
    case SQL_CONVERT_TINYINT:
    case SQL_CONVERT_VARBINARY:
    case SQL_CONVERT_VARCHAR: /* ODBC 1.0 */
		len = 4;
        value = fInfoType;
        break;

    case SQL_CONVERT_FUNCTIONS: /* ODBC 1.0 */
		len = 4;
        value = 0;
        break;

    case SQL_CORRELATION_NAME: /* ODBC 1.0 */

		/*	Saying no correlation name makes Query not work right.
			value = SQL_CN_NONE;
		*/
		len = 2;
        value = SQL_CN_ANY;
        break;

    case SQL_CURSOR_COMMIT_BEHAVIOR: /* ODBC 1.0 */
        len = 2;
        value = SQL_CB_CLOSE;
        break;

    case SQL_CURSOR_ROLLBACK_BEHAVIOR: /* ODBC 1.0 */
        len = 2;
        value = SQL_CB_CLOSE;
        break;

    case SQL_DATA_SOURCE_NAME: /* ODBC 1.0 */
		p = CC_get_DSN(conn);
        break;

    case SQL_DATA_SOURCE_READ_ONLY: /* ODBC 1.0 */
		p = CC_is_onlyread(conn) ? "Y" : "N";
        break;

    case SQL_DATABASE_NAME: /* Support for old ODBC 1.0 Apps */

		/*	Returning the database name causes problems in MS Query.
			It generates query like: "SELECT DISTINCT a FROM byronncrap3 crap3"

			p = CC_get_database(conn);
		*/
		p = "";    
		break;

    case SQL_DBMS_NAME: /* ODBC 1.0 */
		p = DBMS_NAME;
        break;

    case SQL_DBMS_VER: /* ODBC 1.0 */
		p = DBMS_VERSION;
        break;

    case SQL_DEFAULT_TXN_ISOLATION: /* ODBC 1.0 */
		len = 4;
        value = SQL_TXN_READ_COMMITTED; /*SQL_TXN_SERIALIZABLE; */
        break;

    case SQL_DRIVER_NAME: /* ODBC 1.0 */
        p = DRIVER_FILE_NAME;
        break;

    case SQL_DRIVER_ODBC_VER:
		p = DRIVER_ODBC_VER;
        break;

    case SQL_DRIVER_VER: /* ODBC 1.0 */
        p = POSTGRESDRIVERVERSION;
        break;

    case SQL_EXPRESSIONS_IN_ORDERBY: /* ODBC 1.0 */
		p = "N";
        break;

    case SQL_FETCH_DIRECTION: /* ODBC 1.0 */
		len = 4;
        value = globals.use_declarefetch ? (SQL_FD_FETCH_NEXT) : (SQL_FD_FETCH_NEXT |
                                   SQL_FD_FETCH_FIRST |
                                   SQL_FD_FETCH_LAST |
                                   SQL_FD_FETCH_PRIOR |
                                   SQL_FD_FETCH_ABSOLUTE |
								   SQL_FD_FETCH_RELATIVE | 
								   SQL_FD_FETCH_BOOKMARK);
        break;

    case SQL_FILE_USAGE: /* ODBC 2.0 */
		len = 2;
        value = SQL_FILE_NOT_SUPPORTED;
        break;

    case SQL_GETDATA_EXTENSIONS: /* ODBC 2.0 */
		len = 4;
        value = (SQL_GD_ANY_COLUMN | SQL_GD_ANY_ORDER | SQL_GD_BOUND | SQL_GD_BLOCK);
        break;

    case SQL_GROUP_BY: /* ODBC 2.0 */
		len = 2;
        value = SQL_GB_GROUP_BY_EQUALS_SELECT;
        break;

    case SQL_IDENTIFIER_CASE: /* ODBC 1.0 */
        /*	are identifiers case-sensitive (yes, but only when quoted.  If not quoted, they
			default to lowercase)
		*/
		len = 2;
        value = SQL_IC_LOWER;
        break;

    case SQL_IDENTIFIER_QUOTE_CHAR: /* ODBC 1.0 */
        /* the character used to quote "identifiers" */
		p = PROTOCOL_62(ci) ? " " : "\"";
        break;

    case SQL_KEYWORDS: /* ODBC 2.0 */
		p = "";
        break;

    case SQL_LIKE_ESCAPE_CLAUSE: /* ODBC 2.0 */
		/*	is there a character that escapes '%' and '_' in a LIKE clause?
			not as far as I can tell
		*/
        p = "N";
        break;

    case SQL_LOCK_TYPES: /* ODBC 2.0 */
		len = 4;
        value = globals.lie ? (SQL_LCK_NO_CHANGE | SQL_LCK_EXCLUSIVE | SQL_LCK_UNLOCK) : SQL_LCK_NO_CHANGE;
        break;

    case SQL_MAX_BINARY_LITERAL_LEN: /* ODBC 2.0 */
		len = 4;
        value = 0;
        break;

    case SQL_MAX_CHAR_LITERAL_LEN: /* ODBC 2.0 */
		len = 4;
        value = 0;
        break;

    case SQL_MAX_COLUMN_NAME_LEN: /* ODBC 1.0 */
		len = 2;
        value = MAX_COLUMN_LEN;
        break;

    case SQL_MAX_COLUMNS_IN_GROUP_BY: /* ODBC 2.0 */
		len = 2;
        value = 0;
        break;

    case SQL_MAX_COLUMNS_IN_INDEX: /* ODBC 2.0 */
		len = 2;
        value = 0;
        break;

    case SQL_MAX_COLUMNS_IN_ORDER_BY: /* ODBC 2.0 */
		len = 2;
        value = 0;
        break;

    case SQL_MAX_COLUMNS_IN_SELECT: /* ODBC 2.0 */
		len = 2;
        value = 0;
        break;

    case SQL_MAX_COLUMNS_IN_TABLE: /* ODBC 2.0 */
		len = 2;
        value = 0;
        break;

    case SQL_MAX_CURSOR_NAME_LEN: /* ODBC 1.0 */
		len = 2;
        value = MAX_CURSOR_LEN;
        break;

    case SQL_MAX_INDEX_SIZE: /* ODBC 2.0 */
		len = 4;
        value = 0;
        break;

    case SQL_MAX_OWNER_NAME_LEN: /* ODBC 1.0 */
		len = 2;
        value = 0;
        break;

    case SQL_MAX_PROCEDURE_NAME_LEN: /* ODBC 1.0 */
		len = 2;
        value = 0;
        break;

    case SQL_MAX_QUALIFIER_NAME_LEN: /* ODBC 1.0 */
		len = 2;
        value = 0;
        break;

    case SQL_MAX_ROW_SIZE: /* ODBC 2.0 */
		len = 4;
        value = BLCKSZ;
        break;

    case SQL_MAX_ROW_SIZE_INCLUDES_LONG: /* ODBC 2.0 */
        /*	does the preceding value include LONGVARCHAR and LONGVARBINARY
			fields?   Well, it does include longvarchar, but not longvarbinary.
		*/
		p = "Y";
        break;

    case SQL_MAX_STATEMENT_LEN: /* ODBC 2.0 */
        /* maybe this should be 0? */
		len = 4;
        value = MAX_QUERY_SIZE;
        break;

    case SQL_MAX_TABLE_NAME_LEN: /* ODBC 1.0 */
		len = 2;
        value = MAX_TABLE_LEN;
        break;

    case SQL_MAX_TABLES_IN_SELECT: /* ODBC 2.0 */
		len = 2;
        value = 0;
        break;

    case SQL_MAX_USER_NAME_LEN:
		len = 2;
        value = 0;
        break;

    case SQL_MULT_RESULT_SETS: /* ODBC 1.0 */
        /* Don't support multiple result sets but say yes anyway? */
		p = "Y";
        break;

    case SQL_MULTIPLE_ACTIVE_TXN: /* ODBC 1.0 */
		p = "Y";
        break;

    case SQL_NEED_LONG_DATA_LEN: /* ODBC 2.0 */
		/*	Dont need the length, SQLPutData can handle any size and multiple calls */
		p = "N";
        break;

    case SQL_NON_NULLABLE_COLUMNS: /* ODBC 1.0 */
		len = 2;
        value = SQL_NNC_NON_NULL;
        break;

    case SQL_NULL_COLLATION: /* ODBC 2.0 */
        /* where are nulls sorted? */
		len = 2;
        value = SQL_NC_END;
        break;

    case SQL_NUMERIC_FUNCTIONS: /* ODBC 1.0 */
		len = 4;
        value = 0;
        break;

    case SQL_ODBC_API_CONFORMANCE: /* ODBC 1.0 */
		len = 2;
        value = SQL_OAC_LEVEL1;
        break;

    case SQL_ODBC_SAG_CLI_CONFORMANCE: /* ODBC 1.0 */
		len = 2;
        value = SQL_OSCC_NOT_COMPLIANT;
        break;

    case SQL_ODBC_SQL_CONFORMANCE: /* ODBC 1.0 */
		len = 2;
        value = SQL_OSC_CORE;
        break;

    case SQL_ODBC_SQL_OPT_IEF: /* ODBC 1.0 */
		p = "N";
        break;

    case SQL_ORDER_BY_COLUMNS_IN_SELECT: /* ODBC 2.0 */
		p = (PROTOCOL_62(ci) || PROTOCOL_63(ci)) ? "Y" : "N";		
        break;

    case SQL_OUTER_JOINS: /* ODBC 1.0 */
		p = "N";
        break;

    case SQL_OWNER_TERM: /* ODBC 1.0 */
		p = "owner";
        break;

    case SQL_OWNER_USAGE: /* ODBC 2.0 */
		len = 4;
        value = 0;
        break;

    case SQL_POS_OPERATIONS: /* ODBC 2.0 */
		len = 4;
        value = globals.lie ? (SQL_POS_POSITION | SQL_POS_REFRESH | SQL_POS_UPDATE | SQL_POS_DELETE | SQL_POS_ADD) : (SQL_POS_POSITION | SQL_POS_REFRESH);
        break;

    case SQL_POSITIONED_STATEMENTS: /* ODBC 2.0 */
		len = 4;
        value = globals.lie ? (SQL_PS_POSITIONED_DELETE | 
								SQL_PS_POSITIONED_UPDATE | 
								SQL_PS_SELECT_FOR_UPDATE) : 0;
        break;

    case SQL_PROCEDURE_TERM: /* ODBC 1.0 */
        p = "procedure";
        break;

    case SQL_PROCEDURES: /* ODBC 1.0 */
		p = "Y";
        break;

    case SQL_QUALIFIER_LOCATION: /* ODBC 2.0 */
		len = 2;
        value = SQL_QL_START;
        break;

    case SQL_QUALIFIER_NAME_SEPARATOR: /* ODBC 1.0 */
		p = "";
        break;

    case SQL_QUALIFIER_TERM: /* ODBC 1.0 */
		p = "";
        break;

    case SQL_QUALIFIER_USAGE: /* ODBC 2.0 */
		len = 4;
        value = 0;
        break;

    case SQL_QUOTED_IDENTIFIER_CASE: /* ODBC 2.0 */
        /* are "quoted" identifiers case-sensitive?  YES! */
		len = 2;
        value = SQL_IC_SENSITIVE;
        break;

    case SQL_ROW_UPDATES: /* ODBC 1.0 */
        /*  Driver doesn't support keyset-driven or mixed cursors, so
			not much point in saying row updates are supported
		*/
        p = globals.lie ? "Y" : "N";
        break;

    case SQL_SCROLL_CONCURRENCY: /* ODBC 1.0 */
		len = 4;
        value = globals.lie ? (SQL_SCCO_READ_ONLY | 
								SQL_SCCO_LOCK | 
								SQL_SCCO_OPT_ROWVER | 
								SQL_SCCO_OPT_VALUES) : (SQL_SCCO_READ_ONLY);
        break;

    case SQL_SCROLL_OPTIONS: /* ODBC 1.0 */
		len = 4;
        value = globals.lie ? (SQL_SO_FORWARD_ONLY | 
								SQL_SO_STATIC | 
								SQL_SO_KEYSET_DRIVEN | 
								SQL_SO_DYNAMIC | 
								SQL_SO_MIXED) : (globals.use_declarefetch ? SQL_SO_FORWARD_ONLY : (SQL_SO_FORWARD_ONLY | SQL_SO_STATIC));
        break;

    case SQL_SEARCH_PATTERN_ESCAPE: /* ODBC 1.0 */
		p = "";
        break;

    case SQL_SERVER_NAME: /* ODBC 1.0 */
		p = CC_get_server(conn);
        break;

    case SQL_SPECIAL_CHARACTERS: /* ODBC 2.0 */
        p = "_";
        break;

    case SQL_STATIC_SENSITIVITY: /* ODBC 2.0 */
		len = 4;
        value = globals.lie ? (SQL_SS_ADDITIONS | SQL_SS_DELETIONS | SQL_SS_UPDATES) : 0;
        break;

    case SQL_STRING_FUNCTIONS: /* ODBC 1.0 */
		len = 4;
        value = (SQL_FN_STR_CONCAT |
				SQL_FN_STR_LCASE | 
				SQL_FN_STR_LENGTH | 
				SQL_FN_STR_LOCATE | 
				SQL_FN_STR_LTRIM | 
				SQL_FN_STR_RTRIM |
				SQL_FN_STR_SUBSTRING |
				SQL_FN_STR_UCASE);
        break;

    case SQL_SUBQUERIES: /* ODBC 2.0 */
		/* postgres 6.3 supports subqueries */
		len = 4;
        value = (SQL_SQ_QUANTIFIED |
				SQL_SQ_IN |
				SQL_SQ_EXISTS |
				SQL_SQ_COMPARISON);
        break;

    case SQL_SYSTEM_FUNCTIONS: /* ODBC 1.0 */
		len = 4;
		value = 0;
        break;

    case SQL_TABLE_TERM: /* ODBC 1.0 */
		p = "table";
        break;

    case SQL_TIMEDATE_ADD_INTERVALS: /* ODBC 2.0 */
		len = 4;
        value = 0;
        break;

    case SQL_TIMEDATE_DIFF_INTERVALS: /* ODBC 2.0 */
		len = 4;
        value = 0;
        break;

    case SQL_TIMEDATE_FUNCTIONS: /* ODBC 1.0 */
		len = 4;
        value = (SQL_FN_TD_NOW);
        break;

    case SQL_TXN_CAPABLE: /* ODBC 1.0 */
        /* Postgres can deal with create or drop table statements in a transaction */
		len = 2;
        value = SQL_TC_ALL;
        break;

    case SQL_TXN_ISOLATION_OPTION: /* ODBC 1.0 */
		len = 4;
        value = SQL_TXN_READ_COMMITTED; /* SQL_TXN_SERIALIZABLE; */
        break;

    case SQL_UNION: /* ODBC 2.0 */
		/*  unions with all supported in postgres 6.3 */
		len = 4;
        value = (SQL_U_UNION | SQL_U_UNION_ALL);
        break;

    case SQL_USER_NAME: /* ODBC 1.0 */
		p = CC_get_username(conn);
        break;

    default:
        /* unrecognized key */
        conn->errormsg = "Unrecognized key passed to SQLGetInfo.";
        conn->errornumber = CONN_NOT_IMPLEMENTED_ERROR;
		CC_log_error(func, "", conn);
        return SQL_ERROR;
    }

	result = SQL_SUCCESS;

	mylog("SQLGetInfo: p='%s', len=%d, value=%d, cbMax=%d\n", p?p:"<NULL>", len, value, cbInfoValueMax);

	/*	NOTE, that if rgbInfoValue is NULL, then no warnings or errors should
		result and just pcbInfoValue is returned, which indicates what length 
		would be required if a real buffer had been passed in.
	*/
	if (p) {  /* char/binary data */
		len = strlen(p);

		if (rgbInfoValue) {
			strncpy_null((char *)rgbInfoValue, p, (size_t)cbInfoValueMax);

			if (len >= cbInfoValueMax)  {
				result = SQL_SUCCESS_WITH_INFO;
				conn->errornumber = STMT_TRUNCATED;
				conn->errormsg = "The buffer was too small for the result.";
			}
		}
	}

	else {	/* numeric data */
		
		if (rgbInfoValue) {
		
			if (len == 2 ) 
				*((WORD *)rgbInfoValue) = (WORD) value;
			else if (len == 4)
				*((DWORD *)rgbInfoValue) = (DWORD) value;
		}
	}

	if (pcbInfoValue) 
		*pcbInfoValue = len;

	return result;
}

/*      -       -       -       -       -       -       -       -       - */


RETCODE SQL_API SQLGetTypeInfo(
        HSTMT   hstmt,
        SWORD   fSqlType)
{
static char *func = "SQLGetTypeInfo";
StatementClass *stmt = (StatementClass *) hstmt;
TupleNode *row;
int i;
/* Int4 type; */
Int4 pgType; 
Int2 sqlType;

	mylog("%s: entering...fSqlType = %d\n", func, fSqlType);

	if( ! stmt) {
		SC_log_error(func, "", NULL);
		return SQL_INVALID_HANDLE;
	}


	stmt->manual_result = TRUE;
	stmt->result = QR_Constructor();
	if( ! stmt->result) {
		SC_log_error(func, "Error creating result.", stmt);
		return SQL_ERROR;
	}

	extend_bindings(stmt, 15);

	QR_set_num_fields(stmt->result, 15);
	QR_set_field_info(stmt->result, 0, "TYPE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
	QR_set_field_info(stmt->result, 1, "DATA_TYPE", PG_TYPE_INT2, 2);
	QR_set_field_info(stmt->result, 2, "PRECISION", PG_TYPE_INT4, 4);
	QR_set_field_info(stmt->result, 3, "LITERAL_PREFIX", PG_TYPE_TEXT, MAX_INFO_STRING);
	QR_set_field_info(stmt->result, 4, "LITERAL_SUFFIX", PG_TYPE_TEXT, MAX_INFO_STRING);
	QR_set_field_info(stmt->result, 5, "CREATE_PARAMS", PG_TYPE_TEXT, MAX_INFO_STRING);
	QR_set_field_info(stmt->result, 6, "NULLABLE", PG_TYPE_INT2, 2);
	QR_set_field_info(stmt->result, 7, "CASE_SENSITIVE", PG_TYPE_INT2, 2);
	QR_set_field_info(stmt->result, 8, "SEARCHABLE", PG_TYPE_INT2, 2);
	QR_set_field_info(stmt->result, 9, "UNSIGNED_ATTRIBUTE", PG_TYPE_INT2, 2);
	QR_set_field_info(stmt->result, 10, "MONEY", PG_TYPE_INT2, 2);
	QR_set_field_info(stmt->result, 11, "AUTO_INCREMENT", PG_TYPE_INT2, 2);
	QR_set_field_info(stmt->result, 12, "LOCAL_TYPE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
	QR_set_field_info(stmt->result, 13, "MINIMUM_SCALE", PG_TYPE_INT2, 2);
	QR_set_field_info(stmt->result, 14, "MAXIMUM_SCALE", PG_TYPE_INT2, 2);

	for(i=0, sqlType = sqlTypes[0]; sqlType; sqlType = sqlTypes[++i]) {
		pgType = sqltype_to_pgtype(sqlType);

		if (fSqlType == SQL_ALL_TYPES || fSqlType == sqlType) {
			row = (TupleNode *)malloc(sizeof(TupleNode) + (15 - 1)*sizeof(TupleField));

			/*	These values can't be NULL */
			set_tuplefield_string(&row->tuple[0], pgtype_to_name(stmt, pgType));
			set_tuplefield_int2(&row->tuple[1], (Int2) sqlType);
			set_tuplefield_int2(&row->tuple[6], pgtype_nullable(stmt, pgType));
			set_tuplefield_int2(&row->tuple[7], pgtype_case_sensitive(stmt, pgType));
			set_tuplefield_int2(&row->tuple[8], pgtype_searchable(stmt, pgType));
			set_tuplefield_int2(&row->tuple[10], pgtype_money(stmt, pgType));

			/*	Localized data-source dependent data type name (always NULL) */
			set_tuplefield_null(&row->tuple[12]);	

			/*	These values can be NULL */
			set_nullfield_int4(&row->tuple[2], pgtype_precision(stmt, pgType, PG_STATIC, PG_STATIC));
			set_nullfield_string(&row->tuple[3], pgtype_literal_prefix(stmt, pgType));
			set_nullfield_string(&row->tuple[4], pgtype_literal_suffix(stmt, pgType));
			set_nullfield_string(&row->tuple[5], pgtype_create_params(stmt, pgType));
			set_nullfield_int2(&row->tuple[9], pgtype_unsigned(stmt, pgType));
			set_nullfield_int2(&row->tuple[11], pgtype_auto_increment(stmt, pgType));
			set_nullfield_int2(&row->tuple[13], pgtype_scale(stmt, pgType, PG_STATIC));
			set_nullfield_int2(&row->tuple[14], pgtype_scale(stmt, pgType, PG_STATIC));

			QR_add_tuple(stmt->result, row);
		}
	}


    stmt->status = STMT_FINISHED;
    stmt->currTuple = -1;
	stmt->rowset_start = -1;
	stmt->current_col = -1;

    return SQL_SUCCESS;
}

/*      -       -       -       -       -       -       -       -       - */

RETCODE SQL_API SQLGetFunctions(
        HDBC      hdbc,
        UWORD     fFunction,
        UWORD FAR *pfExists)
{
static char *func="SQLGetFunctions";

	mylog( "%s: entering...\n", func);

    if (fFunction == SQL_API_ALL_FUNCTIONS) {

		if (globals.lie) {
			int i;
			memset(pfExists, 0, sizeof(UWORD)*100);

			pfExists[SQL_API_SQLALLOCENV] = TRUE;
			pfExists[SQL_API_SQLFREEENV] = TRUE;
			for (i = SQL_API_SQLALLOCCONNECT; i <= SQL_NUM_FUNCTIONS; i++)
				pfExists[i] = TRUE;
			for (i = SQL_EXT_API_START; i <= SQL_EXT_API_LAST; i++)
				pfExists[i] = TRUE;
		}
		else {
			memset(pfExists, 0, sizeof(UWORD)*100);

			/* ODBC core functions */
			pfExists[SQL_API_SQLALLOCCONNECT]     = TRUE;
			pfExists[SQL_API_SQLALLOCENV]         = TRUE;
			pfExists[SQL_API_SQLALLOCSTMT]        = TRUE;
			pfExists[SQL_API_SQLBINDCOL]          = TRUE;  
			pfExists[SQL_API_SQLCANCEL]           = TRUE;
			pfExists[SQL_API_SQLCOLATTRIBUTES]    = TRUE;
			pfExists[SQL_API_SQLCONNECT]          = TRUE;
			pfExists[SQL_API_SQLDESCRIBECOL]      = TRUE;  /* partial */
			pfExists[SQL_API_SQLDISCONNECT]       = TRUE;
			pfExists[SQL_API_SQLERROR]            = TRUE;
			pfExists[SQL_API_SQLEXECDIRECT]       = TRUE;
			pfExists[SQL_API_SQLEXECUTE]          = TRUE;
			pfExists[SQL_API_SQLFETCH]            = TRUE;
			pfExists[SQL_API_SQLFREECONNECT]      = TRUE;
			pfExists[SQL_API_SQLFREEENV]          = TRUE;
			pfExists[SQL_API_SQLFREESTMT]         = TRUE;
			pfExists[SQL_API_SQLGETCURSORNAME]    = TRUE;
			pfExists[SQL_API_SQLNUMRESULTCOLS]    = TRUE;
			pfExists[SQL_API_SQLPREPARE]          = TRUE;  /* complete? */
			pfExists[SQL_API_SQLROWCOUNT]         = TRUE;
			pfExists[SQL_API_SQLSETCURSORNAME]    = TRUE;
			pfExists[SQL_API_SQLSETPARAM]         = FALSE; /* odbc 1.0 */
			pfExists[SQL_API_SQLTRANSACT]         = TRUE;

			/* ODBC level 1 functions */
			pfExists[SQL_API_SQLBINDPARAMETER]    = TRUE;
			pfExists[SQL_API_SQLCOLUMNS]          = TRUE;
			pfExists[SQL_API_SQLDRIVERCONNECT]    = TRUE;
			pfExists[SQL_API_SQLGETCONNECTOPTION] = TRUE;  /* partial */
			pfExists[SQL_API_SQLGETDATA]          = TRUE;
			pfExists[SQL_API_SQLGETFUNCTIONS]     = TRUE;                                                       
			pfExists[SQL_API_SQLGETINFO]          = TRUE;
			pfExists[SQL_API_SQLGETSTMTOPTION]    = TRUE;  /* partial */
			pfExists[SQL_API_SQLGETTYPEINFO]      = TRUE;
			pfExists[SQL_API_SQLPARAMDATA]        = TRUE;
			pfExists[SQL_API_SQLPUTDATA]          = TRUE;
			pfExists[SQL_API_SQLSETCONNECTOPTION] = TRUE;  /* partial */
			pfExists[SQL_API_SQLSETSTMTOPTION]    = TRUE;
			pfExists[SQL_API_SQLSPECIALCOLUMNS]   = TRUE;
			pfExists[SQL_API_SQLSTATISTICS]       = TRUE;
			pfExists[SQL_API_SQLTABLES]           = TRUE;

			/* ODBC level 2 functions */
			pfExists[SQL_API_SQLBROWSECONNECT]    = FALSE;
			pfExists[SQL_API_SQLCOLUMNPRIVILEGES] = FALSE;
			pfExists[SQL_API_SQLDATASOURCES]      = FALSE;  /* only implemented by DM */
			pfExists[SQL_API_SQLDESCRIBEPARAM]    = FALSE;	/* not properly implemented */
			pfExists[SQL_API_SQLDRIVERS]          = FALSE;  /* only implemented by DM */
			pfExists[SQL_API_SQLEXTENDEDFETCH]    = TRUE;
			pfExists[SQL_API_SQLFOREIGNKEYS]      = TRUE;
			pfExists[SQL_API_SQLMORERESULTS]      = TRUE;
			pfExists[SQL_API_SQLNATIVESQL]        = TRUE;
			pfExists[SQL_API_SQLNUMPARAMS]        = TRUE;
			pfExists[SQL_API_SQLPARAMOPTIONS]     = FALSE;
			pfExists[SQL_API_SQLPRIMARYKEYS]      = TRUE;
			pfExists[SQL_API_SQLPROCEDURECOLUMNS] = FALSE;
			pfExists[SQL_API_SQLPROCEDURES]       = FALSE;
			pfExists[SQL_API_SQLSETPOS]           = TRUE;
			pfExists[SQL_API_SQLSETSCROLLOPTIONS] = TRUE;	/* odbc 1.0 */
			pfExists[SQL_API_SQLTABLEPRIVILEGES]  = FALSE;
		}
    } else {

		if (globals.lie)
			*pfExists = TRUE;

		else {

			switch(fFunction) {
			case SQL_API_SQLALLOCCONNECT:     *pfExists = TRUE; break;
			case SQL_API_SQLALLOCENV:         *pfExists = TRUE; break;
			case SQL_API_SQLALLOCSTMT:        *pfExists = TRUE; break;
			case SQL_API_SQLBINDCOL:          *pfExists = TRUE; break;
			case SQL_API_SQLCANCEL:           *pfExists = TRUE; break;
			case SQL_API_SQLCOLATTRIBUTES:    *pfExists = TRUE; break;
			case SQL_API_SQLCONNECT:          *pfExists = TRUE; break;
			case SQL_API_SQLDESCRIBECOL:      *pfExists = TRUE; break;  /* partial */
			case SQL_API_SQLDISCONNECT:       *pfExists = TRUE; break;
			case SQL_API_SQLERROR:            *pfExists = TRUE; break;
			case SQL_API_SQLEXECDIRECT:       *pfExists = TRUE; break;
			case SQL_API_SQLEXECUTE:          *pfExists = TRUE; break;
			case SQL_API_SQLFETCH:            *pfExists = TRUE; break;
			case SQL_API_SQLFREECONNECT:      *pfExists = TRUE; break;
			case SQL_API_SQLFREEENV:          *pfExists = TRUE; break;
			case SQL_API_SQLFREESTMT:         *pfExists = TRUE; break;
			case SQL_API_SQLGETCURSORNAME:    *pfExists = TRUE; break;
			case SQL_API_SQLNUMRESULTCOLS:    *pfExists = TRUE; break;
			case SQL_API_SQLPREPARE:          *pfExists = TRUE; break;
			case SQL_API_SQLROWCOUNT:         *pfExists = TRUE; break;
			case SQL_API_SQLSETCURSORNAME:    *pfExists = TRUE; break;
			case SQL_API_SQLSETPARAM:         *pfExists = FALSE; break; /* odbc 1.0 */
			case SQL_API_SQLTRANSACT:         *pfExists = TRUE; break;

				/* ODBC level 1 functions */
			case SQL_API_SQLBINDPARAMETER:    *pfExists = TRUE; break;
			case SQL_API_SQLCOLUMNS:          *pfExists = TRUE; break;
			case SQL_API_SQLDRIVERCONNECT:    *pfExists = TRUE; break;
			case SQL_API_SQLGETCONNECTOPTION: *pfExists = TRUE; break;  /* partial */
			case SQL_API_SQLGETDATA:          *pfExists = TRUE; break;
			case SQL_API_SQLGETFUNCTIONS:     *pfExists = TRUE; break;
			case SQL_API_SQLGETINFO:          *pfExists = TRUE; break;
			case SQL_API_SQLGETSTMTOPTION:    *pfExists = TRUE; break;  /* partial */
			case SQL_API_SQLGETTYPEINFO:      *pfExists = TRUE; break;
			case SQL_API_SQLPARAMDATA:        *pfExists = TRUE; break;
			case SQL_API_SQLPUTDATA:          *pfExists = TRUE; break;
			case SQL_API_SQLSETCONNECTOPTION: *pfExists = TRUE; break;  /* partial */
			case SQL_API_SQLSETSTMTOPTION:    *pfExists = TRUE; break;
			case SQL_API_SQLSPECIALCOLUMNS:   *pfExists = TRUE; break;
			case SQL_API_SQLSTATISTICS:       *pfExists = TRUE; break;
			case SQL_API_SQLTABLES:           *pfExists = TRUE; break;

				/* ODBC level 2 functions */
			case SQL_API_SQLBROWSECONNECT:    *pfExists = FALSE; break;
			case SQL_API_SQLCOLUMNPRIVILEGES: *pfExists = FALSE; break;
			case SQL_API_SQLDATASOURCES:      *pfExists = FALSE; break;  /* only implemented by DM */
			case SQL_API_SQLDESCRIBEPARAM:    *pfExists = FALSE; break;  /* not properly implemented */
			case SQL_API_SQLDRIVERS:          *pfExists = FALSE; break;  /* only implemented by DM */
			case SQL_API_SQLEXTENDEDFETCH:    *pfExists = TRUE; break;
			case SQL_API_SQLFOREIGNKEYS:      *pfExists = TRUE; break;
			case SQL_API_SQLMORERESULTS:      *pfExists = TRUE; break;
			case SQL_API_SQLNATIVESQL:        *pfExists = TRUE; break;
			case SQL_API_SQLNUMPARAMS:        *pfExists = TRUE; break;
			case SQL_API_SQLPARAMOPTIONS:     *pfExists = FALSE; break;
			case SQL_API_SQLPRIMARYKEYS:      *pfExists = TRUE; break;
			case SQL_API_SQLPROCEDURECOLUMNS: *pfExists = FALSE; break;
			case SQL_API_SQLPROCEDURES:       *pfExists = FALSE; break;
			case SQL_API_SQLSETPOS:           *pfExists = TRUE; break;
			case SQL_API_SQLSETSCROLLOPTIONS: *pfExists = TRUE; break;	/* odbc 1.0 */
			case SQL_API_SQLTABLEPRIVILEGES:  *pfExists = FALSE; break;
			}
		}
    }

    return SQL_SUCCESS;
}



RETCODE SQL_API SQLTables(
                          HSTMT       hstmt,
                          UCHAR FAR * szTableQualifier,
                          SWORD       cbTableQualifier,
                          UCHAR FAR * szTableOwner,
                          SWORD       cbTableOwner,
                          UCHAR FAR * szTableName,
                          SWORD       cbTableName,
                          UCHAR FAR * szTableType,
                          SWORD       cbTableType)
{
static char *func = "SQLTables";
StatementClass *stmt = (StatementClass *) hstmt;
StatementClass *tbl_stmt;
TupleNode *row;
HSTMT htbl_stmt;
RETCODE result;
char *tableType;
char tables_query[MAX_STATEMENT_LEN];
char table_name[MAX_INFO_STRING], table_owner[MAX_INFO_STRING], relhasrules[MAX_INFO_STRING];
ConnInfo *ci;
char *prefix[32], prefixes[MEDIUM_REGISTRY_LEN];
char *table_type[32], table_types[MAX_INFO_STRING];
char show_system_tables, show_regular_tables, show_views;
char regular_table, view, systable;
int i;

mylog("%s: entering...stmt=%u\n", func, stmt);

	if( ! stmt) {
		SC_log_error(func, "", NULL);
		return SQL_INVALID_HANDLE;
	}

	stmt->manual_result = TRUE;
	stmt->errormsg_created = TRUE;

	ci = &stmt->hdbc->connInfo;

	result = SQLAllocStmt( stmt->hdbc, &htbl_stmt);
	if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errornumber = STMT_NO_MEMORY_ERROR;
		stmt->errormsg = "Couldn't allocate statement for SQLTables result.";
		SC_log_error(func, "", stmt);
		return SQL_ERROR;
	}
	tbl_stmt = (StatementClass *) htbl_stmt;

	/* ********************************************************************** */
	/*	Create the query to find out the tables */
	/* ********************************************************************** */

	strcpy(tables_query, "select relname, usename, relhasrules from pg_class, pg_user");
	strcat(tables_query, " where relkind = 'r'");

	my_strcat(tables_query, " and usename like '%.*s'", szTableOwner, cbTableOwner);
	my_strcat(tables_query, " and relname like '%.*s'", szTableName, cbTableName);


	/*	Parse the extra systable prefix  */
	strcpy(prefixes, globals.extra_systable_prefixes);
	i = 0;
	prefix[i] = strtok(prefixes, ";");
	while (prefix[i] && i<32) {
		prefix[++i] = strtok(NULL, ";");
	}

	/*	Parse the desired table types to return */
	show_system_tables = FALSE;
	show_regular_tables = FALSE;
	show_views = FALSE;

	/*	make_string mallocs memory */
	tableType = make_string(szTableType, cbTableType, NULL);
	if (tableType) {
		strcpy(table_types, tableType);
		free(tableType);
		i = 0;
		table_type[i] = strtok(table_types, ",");
		while (table_type[i] && i<32) {
			table_type[++i] = strtok(NULL, ",");
		}

		/*	Check for desired table types to return */
		i = 0;
		while (table_type[i]) {
			if ( strstr(table_type[i], "SYSTEM TABLE"))
				show_system_tables = TRUE;
			else if ( strstr(table_type[i], "TABLE"))
				show_regular_tables = TRUE;
			else if ( strstr(table_type[i], "VIEW"))
				show_views = TRUE;

			i++;
		}
	}
	else {
		show_regular_tables = TRUE;
		show_views = TRUE;
	}

	/*  If not interested in SYSTEM TABLES then filter them out
		to save some time on the query.  If treating system tables
		as regular tables, then dont filter either.
	*/
	if ( ! atoi(ci->show_system_tables) && ! show_system_tables) {
		strcat(tables_query, " and relname !~ '^" POSTGRES_SYS_PREFIX);

		/*	Also filter out user-defined system table types */
		i = 0;
		while(prefix[i]) {
			strcat(tables_query, "|^");
			strcat(tables_query, prefix[i]);
			i++;
		}

		strcat(tables_query, "'");
	}


	/*	filter out large objects unconditionally (they are not system tables) and match users */
	strcat(tables_query, " and relname !~ '^xinv[0-9]+'");
	strcat(tables_query, " and usesysid = relowner");
	strcat(tables_query, " order by relname");

	/* ********************************************************************** */

	result = SQLExecDirect(htbl_stmt, tables_query, strlen(tables_query));
	if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = SC_create_errormsg(htbl_stmt);
		stmt->errornumber = tbl_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(htbl_stmt, SQL_DROP);
		return SQL_ERROR;
	}

    result = SQLBindCol(htbl_stmt, 1, SQL_C_CHAR,
                        table_name, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = tbl_stmt->errormsg;
		stmt->errornumber = tbl_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLBindCol(htbl_stmt, 2, SQL_C_CHAR,
                        table_owner, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = tbl_stmt->errormsg;
		stmt->errornumber = tbl_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }
    result = SQLBindCol(htbl_stmt, 3, SQL_C_CHAR,
                        relhasrules, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = tbl_stmt->errormsg;
		stmt->errornumber = tbl_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }

	stmt->result = QR_Constructor();
	if(!stmt->result) {
		stmt->errormsg = "Couldn't allocate memory for SQLTables result.";
		stmt->errornumber = STMT_NO_MEMORY_ERROR;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(htbl_stmt, SQL_DROP);
		return SQL_ERROR;
	}

	/* the binding structure for a statement is not set up until */
	/* a statement is actually executed, so we'll have to do this ourselves. */
	extend_bindings(stmt, 5);
	
	/* set the field names */
	QR_set_num_fields(stmt->result, 5);
	QR_set_field_info(stmt->result, 0, "TABLE_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
	QR_set_field_info(stmt->result, 1, "TABLE_OWNER", PG_TYPE_TEXT, MAX_INFO_STRING);
	QR_set_field_info(stmt->result, 2, "TABLE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
	QR_set_field_info(stmt->result, 3, "TABLE_TYPE", PG_TYPE_TEXT, MAX_INFO_STRING);
	QR_set_field_info(stmt->result, 4, "REMARKS", PG_TYPE_TEXT, 254);

	/* add the tuples */
	result = SQLFetch(htbl_stmt);
	while((result == SQL_SUCCESS) || (result == SQL_SUCCESS_WITH_INFO)) {

		/*	Determine if this table name is a system table.
			If treating system tables as regular tables, then 
			no need to do this test.
		*/		
		systable = FALSE;
		if( ! atoi(ci->show_system_tables)) {

			if ( strncmp(table_name, POSTGRES_SYS_PREFIX, strlen(POSTGRES_SYS_PREFIX)) == 0)
				systable = TRUE;

			else {			/* Check extra system table prefixes */
				i = 0;
				while (prefix[i]) {
					mylog("table_name='%s', prefix[%d]='%s'\n", table_name, i, prefix[i]);
					if (strncmp(table_name, prefix[i], strlen(prefix[i])) == 0) {
						systable = TRUE;
						break;
					}
					i++;
				}
			}
		}

		/*	Determine if the table name is a view */
		view = (relhasrules[0] == '1');

		/*	It must be a regular table */
		regular_table = ( ! systable && ! view);


		/*	Include the row in the result set if meets all criteria */
		/*	NOTE: Unsupported table types (i.e., LOCAL TEMPORARY, ALIAS, etc)
					will return nothing */
		if ( (systable && show_system_tables) ||
			 (view && show_views) || 
			 (regular_table && show_regular_tables)) {

			row = (TupleNode *)malloc(sizeof(TupleNode) + (5 - 1) * sizeof(TupleField));

			set_tuplefield_string(&row->tuple[0], "");

			/* I have to hide the table owner from Access, otherwise it */
			/* insists on referring to the table as 'owner.table'. */
			/* (this is valid according to the ODBC SQL grammar, but */
			/* Postgres won't support it.) */
			/* set_tuplefield_string(&row->tuple[1], table_owner); */

			mylog("SQLTables: table_name = '%s'\n", table_name);

			set_tuplefield_string(&row->tuple[1], "");
			set_tuplefield_string(&row->tuple[2], table_name);
			set_tuplefield_string(&row->tuple[3], systable ? "SYSTEM TABLE" : (view ? "VIEW" : "TABLE"));
			set_tuplefield_string(&row->tuple[4], "");

			QR_add_tuple(stmt->result, row);
		}
		result = SQLFetch(htbl_stmt);
    }
	if(result != SQL_NO_DATA_FOUND) {
		stmt->errormsg = SC_create_errormsg(htbl_stmt);
		stmt->errornumber = tbl_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(htbl_stmt, SQL_DROP);
		return SQL_ERROR;
	}

	/* also, things need to think that this statement is finished so */
	/* the results can be retrieved. */
	stmt->status = STMT_FINISHED;

	/* set up the current tuple pointer for SQLFetch */
	stmt->currTuple = -1;
	stmt->rowset_start = -1;
	stmt->current_col = -1;

	SQLFreeStmt(htbl_stmt, SQL_DROP);
	mylog("SQLTables(): EXIT,  stmt=%u\n", stmt);
	return SQL_SUCCESS;
}




RETCODE SQL_API SQLColumns(
                           HSTMT        hstmt,
                           UCHAR FAR *  szTableQualifier,
                           SWORD        cbTableQualifier,
                           UCHAR FAR *  szTableOwner,
                           SWORD        cbTableOwner,
                           UCHAR FAR *  szTableName,
                           SWORD        cbTableName,
                           UCHAR FAR *  szColumnName,
                           SWORD        cbColumnName)
{
static char *func = "SQLColumns";
StatementClass *stmt = (StatementClass *) hstmt;
TupleNode *row;
HSTMT hcol_stmt;
StatementClass *col_stmt;
char columns_query[MAX_STATEMENT_LEN];
RETCODE result;
char table_owner[MAX_INFO_STRING], table_name[MAX_INFO_STRING], field_name[MAX_INFO_STRING], field_type_name[MAX_INFO_STRING];
Int2 field_number, result_cols, scale;
Int4 field_type, the_type, field_length, mod_length, precision;
char useStaticPrecision;
char not_null[MAX_INFO_STRING], relhasrules[MAX_INFO_STRING];
ConnInfo *ci;


	mylog("%s: entering...stmt=%u\n", func, stmt);

	if( ! stmt) {
		SC_log_error(func, "", NULL);
		return SQL_INVALID_HANDLE;
	}

	stmt->manual_result = TRUE;
	stmt->errormsg_created = TRUE;

	ci = &stmt->hdbc->connInfo;

	/* ********************************************************************** */
	/*	Create the query to find out the columns (Note: pre 6.3 did not have the atttypmod field) */
	/* ********************************************************************** */
	sprintf(columns_query, "select u.usename, c.relname, a.attname, a.atttypid"
			", t.typname, a.attnum, a.attlen, %s, a.attnotnull, c.relhasrules"
			" from pg_user u, pg_class c, pg_attribute a, pg_type t"
			" where u.usesysid = c.relowner"
			" and c.oid= a.attrelid and a.atttypid = t.oid and (a.attnum > 0)",
			PROTOCOL_62(ci) ? "a.attlen" : "a.atttypmod");

	my_strcat(columns_query, " and c.relname like '%.*s'", szTableName, cbTableName);
	my_strcat(columns_query, " and u.usename like '%.*s'", szTableOwner, cbTableOwner);
	my_strcat(columns_query, " and a.attname like '%.*s'", szColumnName, cbColumnName);

	/* give the output in the order the columns were defined */
	/* when the table was created */
    strcat(columns_query, " order by attnum");
    /* ********************************************************************** */

    result = SQLAllocStmt( stmt->hdbc, &hcol_stmt);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errornumber = STMT_NO_MEMORY_ERROR;
		stmt->errormsg = "Couldn't allocate statement for SQLColumns result.";
		SC_log_error(func, "", stmt);
        return SQL_ERROR;
    }
	col_stmt = (StatementClass *) hcol_stmt;

	mylog("SQLColumns: hcol_stmt = %u, col_stmt = %u\n", hcol_stmt, col_stmt);

    result = SQLExecDirect(hcol_stmt, columns_query,
                           strlen(columns_query));
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = SC_create_errormsg(hcol_stmt);
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLBindCol(hcol_stmt, 1, SQL_C_CHAR,
                        table_owner, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = col_stmt->errormsg;
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLBindCol(hcol_stmt, 2, SQL_C_CHAR,
                        table_name, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = col_stmt->errormsg;
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLBindCol(hcol_stmt, 3, SQL_C_CHAR,
                        field_name, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = col_stmt->errormsg;
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLBindCol(hcol_stmt, 4, SQL_C_LONG,
                        &field_type, 4, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = col_stmt->errormsg;
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLBindCol(hcol_stmt, 5, SQL_C_CHAR,
                        field_type_name, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = col_stmt->errormsg;
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLBindCol(hcol_stmt, 6, SQL_C_SHORT,
                        &field_number, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = col_stmt->errormsg;
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLBindCol(hcol_stmt, 7, SQL_C_LONG,
                        &field_length, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = col_stmt->errormsg;
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLBindCol(hcol_stmt, 8, SQL_C_LONG,
                        &mod_length, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = col_stmt->errormsg;
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLBindCol(hcol_stmt, 9, SQL_C_CHAR,
                        not_null, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = col_stmt->errormsg;
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLBindCol(hcol_stmt, 10, SQL_C_CHAR,
                        relhasrules, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = col_stmt->errormsg;
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    stmt->result = QR_Constructor();
    if(!stmt->result) {
		stmt->errormsg = "Couldn't allocate memory for SQLColumns result.";
        stmt->errornumber = STMT_NO_MEMORY_ERROR;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    /* the binding structure for a statement is not set up until */
    /* a statement is actually executed, so we'll have to do this ourselves. */
	result_cols = 14;
    extend_bindings(stmt, result_cols);

    /* set the field names */
    QR_set_num_fields(stmt->result, result_cols);
    QR_set_field_info(stmt->result, 0, "TABLE_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 1, "TABLE_OWNER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 2, "TABLE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 3, "COLUMN_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 4, "DATA_TYPE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 5, "TYPE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 6, "PRECISION", PG_TYPE_INT4, 4);
    QR_set_field_info(stmt->result, 7, "LENGTH", PG_TYPE_INT4, 4);
    QR_set_field_info(stmt->result, 8, "SCALE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 9, "RADIX", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 10, "NULLABLE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 11, "REMARKS", PG_TYPE_TEXT, 254);

    /*	User defined fields */
    QR_set_field_info(stmt->result, 12, "DISPLAY_SIZE", PG_TYPE_INT4, 4);
	QR_set_field_info(stmt->result, 13, "FIELD_TYPE", PG_TYPE_INT4, 4);

	
	result = SQLFetch(hcol_stmt);


	/*	Only show oid if option AND there are other columns AND 
		it's not being called by SQLStatistics .
		Always show OID if it's a system table
	*/

	if (result != SQL_ERROR && ! stmt->internal) {

		if (relhasrules[0] != '1' && 
		    (atoi(ci->show_oid_column) || 
			 strncmp(table_name, POSTGRES_SYS_PREFIX, strlen(POSTGRES_SYS_PREFIX)) == 0)) {

			/*	For OID fields */
			the_type = PG_TYPE_OID;
			row = (TupleNode *)malloc(sizeof(TupleNode) +
									  (result_cols - 1) * sizeof(TupleField));

			set_tuplefield_string(&row->tuple[0], "");
			/* see note in SQLTables() */
			/*      set_tuplefield_string(&row->tuple[1], table_owner); */
			set_tuplefield_string(&row->tuple[1], "");
			set_tuplefield_string(&row->tuple[2], table_name);
			set_tuplefield_string(&row->tuple[3], "oid");
			set_tuplefield_int2(&row->tuple[4], pgtype_to_sqltype(stmt, the_type));
			set_tuplefield_string(&row->tuple[5], "OID");

			set_tuplefield_int4(&row->tuple[7], pgtype_length(stmt, the_type, PG_STATIC, PG_STATIC));
			set_tuplefield_int4(&row->tuple[6], pgtype_precision(stmt, the_type, PG_STATIC, PG_STATIC));

			set_nullfield_int2(&row->tuple[8], pgtype_scale(stmt, the_type, PG_STATIC));
			set_nullfield_int2(&row->tuple[9], pgtype_radix(stmt, the_type));
			set_tuplefield_int2(&row->tuple[10], SQL_NO_NULLS);
			set_tuplefield_string(&row->tuple[11], "");

			set_tuplefield_int4(&row->tuple[12], pgtype_display_size(stmt, the_type, PG_STATIC, PG_STATIC));
			set_tuplefield_int4(&row->tuple[13], the_type);

			QR_add_tuple(stmt->result, row);
		}

	}

    while((result == SQL_SUCCESS) || (result == SQL_SUCCESS_WITH_INFO)) {
        row = (TupleNode *)malloc(sizeof(TupleNode) +
                                  (result_cols - 1) * sizeof(TupleField));


        set_tuplefield_string(&row->tuple[0], "");
        /* see note in SQLTables() */
        /*      set_tuplefield_string(&row->tuple[1], table_owner); */
        set_tuplefield_string(&row->tuple[1], "");
        set_tuplefield_string(&row->tuple[2], table_name);
        set_tuplefield_string(&row->tuple[3], field_name);
        set_tuplefield_int2(&row->tuple[4], pgtype_to_sqltype(stmt, field_type));
        set_tuplefield_string(&row->tuple[5], field_type_name);


		/*	Some Notes about Postgres Data Types:

			VARCHAR - the length is stored in the pg_attribute.atttypmod field
			BPCHAR  - the length is also stored as varchar is

			NUMERIC - the scale is stored in atttypmod as follows:
					precision = ((atttypmod - VARHDRSZ) >> 16) & 0xffff
					scale     = (atttypmod - VARHDRSZ) & 0xffff


		*/
		qlog("SQLColumns: table='%s',field_name='%s',type=%d,sqltype=%d,name='%s'\n",
			table_name,field_name,field_type,pgtype_to_sqltype,field_type_name);

		useStaticPrecision = TRUE;

		if (field_type == PG_TYPE_NUMERIC) {
			if (mod_length >= 4)
				mod_length -= 4;			/* the length is in atttypmod - 4 */

			if (mod_length >= 0) {
				useStaticPrecision = FALSE;

				precision = (mod_length >> 16) & 0xffff;
				scale = mod_length & 0xffff;

				mylog("SQLColumns: field type is NUMERIC: field_type = %d, mod_length=%d, precision=%d, scale=%d\n", field_type, mod_length, precision, scale );

				set_tuplefield_int4(&row->tuple[7], precision + 2);  /* sign+dec.point */
				set_tuplefield_int4(&row->tuple[6], precision);
				set_tuplefield_int4(&row->tuple[12], precision + 2); /* sign+dec.point */
				set_nullfield_int2(&row->tuple[8], scale);
			}
		}


        if((field_type == PG_TYPE_VARCHAR) ||
		   (field_type == PG_TYPE_BPCHAR)) {

			useStaticPrecision = FALSE;

			if (mod_length >= 4)
				mod_length -= 4;			/* the length is in atttypmod - 4 */

			if (mod_length > globals.max_varchar_size || mod_length <= 0)
				mod_length = globals.max_varchar_size;

			mylog("SQLColumns: field type is VARCHAR,BPCHAR: field_type = %d, mod_length = %d\n", field_type, mod_length);

			set_tuplefield_int4(&row->tuple[7], mod_length);
			set_tuplefield_int4(&row->tuple[6], mod_length);
			set_tuplefield_int4(&row->tuple[12], mod_length);
			set_nullfield_int2(&row->tuple[8], pgtype_scale(stmt, field_type, PG_STATIC));
        } 
		
		if (useStaticPrecision) {
			mylog("SQLColumns: field type is OTHER: field_type = %d, pgtype_length = %d\n", field_type, pgtype_length(stmt, field_type, PG_STATIC, PG_STATIC));

            set_tuplefield_int4(&row->tuple[7], pgtype_length(stmt, field_type, PG_STATIC, PG_STATIC));
			set_tuplefield_int4(&row->tuple[6], pgtype_precision(stmt, field_type, PG_STATIC, PG_STATIC));
			set_tuplefield_int4(&row->tuple[12], pgtype_display_size(stmt, field_type, PG_STATIC, PG_STATIC));
			set_nullfield_int2(&row->tuple[8], pgtype_scale(stmt, field_type, PG_STATIC));
        }

		set_nullfield_int2(&row->tuple[9], pgtype_radix(stmt, field_type));
		set_tuplefield_int2(&row->tuple[10], (Int2) (not_null[0] == '1' ? SQL_NO_NULLS : pgtype_nullable(stmt, field_type)));
		set_tuplefield_string(&row->tuple[11], "");
		set_tuplefield_int4(&row->tuple[13], field_type);

        QR_add_tuple(stmt->result, row);


        result = SQLFetch(hcol_stmt);

    }
    if(result != SQL_NO_DATA_FOUND) {
		stmt->errormsg = SC_create_errormsg(hcol_stmt);
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

	/*	Put the row version column at the end so it might not be */
	/*	mistaken for a key field. */
	if ( relhasrules[0] != '1' && ! stmt->internal && atoi(ci->row_versioning)) {
		/*	For Row Versioning fields */
		the_type = PG_TYPE_INT4;

		row = (TupleNode *)malloc(sizeof(TupleNode) +
								  (result_cols - 1) * sizeof(TupleField));

		set_tuplefield_string(&row->tuple[0], "");
		set_tuplefield_string(&row->tuple[1], "");
		set_tuplefield_string(&row->tuple[2], table_name);
		set_tuplefield_string(&row->tuple[3], "xmin");
		set_tuplefield_int2(&row->tuple[4], pgtype_to_sqltype(stmt, the_type));
		set_tuplefield_string(&row->tuple[5], pgtype_to_name(stmt, the_type));
		set_tuplefield_int4(&row->tuple[6], pgtype_precision(stmt, the_type, PG_STATIC, PG_STATIC));
		set_tuplefield_int4(&row->tuple[7], pgtype_length(stmt, the_type, PG_STATIC, PG_STATIC));
		set_nullfield_int2(&row->tuple[8], pgtype_scale(stmt, the_type, PG_STATIC));
		set_nullfield_int2(&row->tuple[9], pgtype_radix(stmt, the_type));
		set_tuplefield_int2(&row->tuple[10], SQL_NO_NULLS);
		set_tuplefield_string(&row->tuple[11], "");
		set_tuplefield_int4(&row->tuple[12], pgtype_display_size(stmt, the_type, PG_STATIC, PG_STATIC));
		set_tuplefield_int4(&row->tuple[13], the_type);

		QR_add_tuple(stmt->result, row);
	}

	/* also, things need to think that this statement is finished so */
	/* the results can be retrieved. */
    stmt->status = STMT_FINISHED;

    /* set up the current tuple pointer for SQLFetch */
    stmt->currTuple = -1;
	stmt->rowset_start = -1;
	stmt->current_col = -1;

	SQLFreeStmt(hcol_stmt, SQL_DROP);
	mylog("SQLColumns(): EXIT,  stmt=%u\n", stmt);
    return SQL_SUCCESS;
}

RETCODE SQL_API SQLSpecialColumns(
                                  HSTMT        hstmt,
                                  UWORD        fColType,
                                  UCHAR FAR *  szTableQualifier,
                                  SWORD        cbTableQualifier,
                                  UCHAR FAR *  szTableOwner,
                                  SWORD        cbTableOwner,
                                  UCHAR FAR *  szTableName,
                                  SWORD        cbTableName,
                                  UWORD        fScope,
                                  UWORD        fNullable)
{
static char *func = "SQLSpecialColumns";
TupleNode *row;
StatementClass *stmt = (StatementClass *) hstmt;
ConnInfo *ci;
HSTMT hcol_stmt;
StatementClass *col_stmt;
char columns_query[MAX_STATEMENT_LEN];
RETCODE result;
char relhasrules[MAX_INFO_STRING];



mylog("%s: entering...stmt=%u\n", func, stmt);

    if( ! stmt) {
		SC_log_error(func, "", NULL);
        return SQL_INVALID_HANDLE;
    }
	ci = &stmt->hdbc->connInfo;

	stmt->manual_result = TRUE;


	/* ********************************************************************** */
	/*	Create the query to find out if this is a view or not... */
	/* ********************************************************************** */
	sprintf(columns_query, "select c.relhasrules "
		"from pg_user u, pg_class c where "
		"u.usesysid = c.relowner");

	my_strcat(columns_query, " and c.relname like '%.*s'", szTableName, cbTableName);
	my_strcat(columns_query, " and u.usename like '%.*s'", szTableOwner, cbTableOwner);


    result = SQLAllocStmt( stmt->hdbc, &hcol_stmt);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errornumber = STMT_NO_MEMORY_ERROR;
		stmt->errormsg = "Couldn't allocate statement for SQLSpecialColumns result.";
		SC_log_error(func, "", stmt);
        return SQL_ERROR;
    }
	col_stmt = (StatementClass *) hcol_stmt;

	mylog("SQLSpecialColumns: hcol_stmt = %u, col_stmt = %u\n", hcol_stmt, col_stmt);

    result = SQLExecDirect(hcol_stmt, columns_query,
                           strlen(columns_query));
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = SC_create_errormsg(hcol_stmt);
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLBindCol(hcol_stmt, 1, SQL_C_CHAR,
                        relhasrules, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = col_stmt->errormsg;
		stmt->errornumber = col_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

	result = SQLFetch(hcol_stmt);
	SQLFreeStmt(hcol_stmt, SQL_DROP);

    stmt->result = QR_Constructor();
    extend_bindings(stmt, 8);

    QR_set_num_fields(stmt->result, 8);
    QR_set_field_info(stmt->result, 0, "SCOPE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 1, "COLUMN_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 2, "DATA_TYPE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 3, "TYPE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 4, "PRECISION", PG_TYPE_INT4, 4);
    QR_set_field_info(stmt->result, 5, "LENGTH", PG_TYPE_INT4, 4);
    QR_set_field_info(stmt->result, 6, "SCALE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 7, "PSEUDO_COLUMN", PG_TYPE_INT2, 2);

    if ( relhasrules[0] != '1' ) {
		/* use the oid value for the rowid */
		if(fColType == SQL_BEST_ROWID) {
			row = (TupleNode *)malloc(sizeof(TupleNode) + (8 - 1) * sizeof(TupleField));

			set_tuplefield_int2(&row->tuple[0], SQL_SCOPE_SESSION);
			set_tuplefield_string(&row->tuple[1], "oid");
			set_tuplefield_int2(&row->tuple[2], pgtype_to_sqltype(stmt, PG_TYPE_OID));
			set_tuplefield_string(&row->tuple[3], "OID");
			set_tuplefield_int4(&row->tuple[4], pgtype_precision(stmt, PG_TYPE_OID, PG_STATIC, PG_STATIC));
			set_tuplefield_int4(&row->tuple[5], pgtype_length(stmt, PG_TYPE_OID, PG_STATIC, PG_STATIC));
			set_tuplefield_int2(&row->tuple[6], pgtype_scale(stmt, PG_TYPE_OID, PG_STATIC));
			set_tuplefield_int2(&row->tuple[7], SQL_PC_PSEUDO);

			QR_add_tuple(stmt->result, row);

		} else if(fColType == SQL_ROWVER) {

			Int2 the_type = PG_TYPE_INT4;

			if (atoi(ci->row_versioning)) {
				row = (TupleNode *)malloc(sizeof(TupleNode) + (8 - 1) * sizeof(TupleField));

				set_tuplefield_null(&row->tuple[0]);
				set_tuplefield_string(&row->tuple[1], "xmin");
				set_tuplefield_int2(&row->tuple[2], pgtype_to_sqltype(stmt, the_type));
				set_tuplefield_string(&row->tuple[3], pgtype_to_name(stmt, the_type));
				set_tuplefield_int4(&row->tuple[4], pgtype_precision(stmt, the_type, PG_STATIC, PG_STATIC));
				set_tuplefield_int4(&row->tuple[5], pgtype_length(stmt, the_type, PG_STATIC, PG_STATIC));
				set_tuplefield_int2(&row->tuple[6], pgtype_scale(stmt, the_type, PG_STATIC));
				set_tuplefield_int2(&row->tuple[7], SQL_PC_PSEUDO);

				QR_add_tuple(stmt->result, row);
			}
		}
	}



    stmt->status = STMT_FINISHED;
    stmt->currTuple = -1;
	stmt->rowset_start = -1;
	stmt->current_col = -1;

	mylog("SQLSpecialColumns(): EXIT,  stmt=%u\n", stmt);
    return SQL_SUCCESS;
}

RETCODE SQL_API SQLStatistics(
                              HSTMT         hstmt,
                              UCHAR FAR *   szTableQualifier,
                              SWORD         cbTableQualifier,
                              UCHAR FAR *   szTableOwner,
                              SWORD         cbTableOwner,
                              UCHAR FAR *   szTableName,
                              SWORD         cbTableName,
                              UWORD         fUnique,
                              UWORD         fAccuracy)
{
static char *func="SQLStatistics";
StatementClass *stmt = (StatementClass *) hstmt;
char index_query[MAX_STATEMENT_LEN];
HSTMT hindx_stmt;
RETCODE result;
char *table_name;
char index_name[MAX_INFO_STRING];
short fields_vector[8];
char isunique[10], isclustered[10];
SDWORD index_name_len, fields_vector_len;
TupleNode *row;
int i;
HSTMT hcol_stmt;
StatementClass *col_stmt, *indx_stmt;
char column_name[MAX_INFO_STRING], relhasrules[MAX_INFO_STRING];
char **column_names = 0;
Int4 column_name_len;
int total_columns = 0;
char error = TRUE;
ConnInfo *ci;
char buf[256];

mylog("%s: entering...stmt=%u\n", func, stmt);

    if( ! stmt) {
		SC_log_error(func, "", NULL);
        return SQL_INVALID_HANDLE;
    }

	stmt->manual_result = TRUE;
	stmt->errormsg_created = TRUE;

	ci = &stmt->hdbc->connInfo;

    stmt->result = QR_Constructor();
    if(!stmt->result) {
        stmt->errormsg = "Couldn't allocate memory for SQLStatistics result.";
        stmt->errornumber = STMT_NO_MEMORY_ERROR;
		SC_log_error(func, "", stmt);
        return SQL_ERROR;
    }

    /* the binding structure for a statement is not set up until */
    /* a statement is actually executed, so we'll have to do this ourselves. */
    extend_bindings(stmt, 13);

    /* set the field names */
    QR_set_num_fields(stmt->result, 13);
    QR_set_field_info(stmt->result, 0, "TABLE_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 1, "TABLE_OWNER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 2, "TABLE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 3, "NON_UNIQUE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 4, "INDEX_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 5, "INDEX_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 6, "TYPE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 7, "SEQ_IN_INDEX", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 8, "COLUMN_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 9, "COLLATION", PG_TYPE_CHAR, 1);
    QR_set_field_info(stmt->result, 10, "CARDINALITY", PG_TYPE_INT4, 4);
    QR_set_field_info(stmt->result, 11, "PAGES", PG_TYPE_INT4, 4);
    QR_set_field_info(stmt->result, 12, "FILTER_CONDITION", PG_TYPE_TEXT, MAX_INFO_STRING);


    /* only use the table name... the owner should be redundant, and */
    /* we never use qualifiers. */
	table_name = make_string(szTableName, cbTableName, NULL);
	if ( ! table_name) {
        stmt->errormsg = "No table name passed to SQLStatistics.";
        stmt->errornumber = STMT_INTERNAL_ERROR;
		SC_log_error(func, "", stmt);
        return SQL_ERROR;
    }

	/* we need to get a list of the field names first, */
	/* so we can return them later. */
	result = SQLAllocStmt( stmt->hdbc, &hcol_stmt);
	if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = "SQLAllocStmt failed in SQLStatistics for columns.";
		stmt->errornumber = STMT_NO_MEMORY_ERROR;
		goto SEEYA;
	}

	col_stmt = (StatementClass *) hcol_stmt;

	/*	"internal" prevents SQLColumns from returning the oid if it is being shown.
		This would throw everything off.
	*/
	col_stmt->internal = TRUE;
	result = SQLColumns(hcol_stmt, "", 0, "", 0, 
				table_name, (SWORD) strlen(table_name), "", 0);
	col_stmt->internal = FALSE;

	if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
			stmt->errormsg = col_stmt->errormsg;        /* "SQLColumns failed in SQLStatistics."; */
			stmt->errornumber = col_stmt->errornumber;  /* STMT_EXEC_ERROR; */
			SQLFreeStmt(hcol_stmt, SQL_DROP);
			goto SEEYA;
	}
	result = SQLBindCol(hcol_stmt, 4, SQL_C_CHAR,
				column_name, MAX_INFO_STRING, &column_name_len);
	if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = col_stmt->errormsg;
		stmt->errornumber = col_stmt->errornumber;
		SQLFreeStmt(hcol_stmt, SQL_DROP);
		goto SEEYA;

	}

	result = SQLFetch(hcol_stmt);
	while((result == SQL_SUCCESS) || (result == SQL_SUCCESS_WITH_INFO)) {
		total_columns++;

		column_names = 
		(char **)realloc(column_names, 
				 total_columns * sizeof(char *));
		column_names[total_columns-1] = 
		(char *)malloc(strlen(column_name)+1);
		strcpy(column_names[total_columns-1], column_name);

		mylog("SQLStatistics: column_name = '%s'\n", column_name);

		result = SQLFetch(hcol_stmt);
	}
	if(result != SQL_NO_DATA_FOUND || total_columns == 0) {
			stmt->errormsg = SC_create_errormsg(hcol_stmt); /* "Couldn't get column names in SQLStatistics."; */
			stmt->errornumber = col_stmt->errornumber;
			SQLFreeStmt(hcol_stmt, SQL_DROP);
   			goto SEEYA;

	}
	
	SQLFreeStmt(hcol_stmt, SQL_DROP);

	/* get a list of indexes on this table */
    result = SQLAllocStmt( stmt->hdbc, &hindx_stmt);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = "SQLAllocStmt failed in SQLStatistics for indices.";
		stmt->errornumber = STMT_NO_MEMORY_ERROR;
		goto SEEYA;

    }
	indx_stmt = (StatementClass *) hindx_stmt;

	sprintf(index_query, "select c.relname, i.indkey, i.indisunique"
			", i.indisclustered, c.relhasrules"
			" from pg_index i, pg_class c, pg_class d"
			" where c.oid = i.indexrelid and d.relname = '%s'"
			" and d.oid = i.indrelid", table_name);

    result = SQLExecDirect(hindx_stmt, index_query, strlen(index_query));
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = SC_create_errormsg(hindx_stmt); /* "Couldn't execute index query (w/SQLExecDirect) in SQLStatistics."; */
		stmt->errornumber = indx_stmt->errornumber;
		SQLFreeStmt(hindx_stmt, SQL_DROP);
  		goto SEEYA;

    }

    /* bind the index name column */
    result = SQLBindCol(hindx_stmt, 1, SQL_C_CHAR,
                        index_name, MAX_INFO_STRING, &index_name_len);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = indx_stmt->errormsg; /* "Couldn't bind column in SQLStatistics."; */
		stmt->errornumber = indx_stmt->errornumber;
		SQLFreeStmt(hindx_stmt, SQL_DROP);
   		goto SEEYA;

    }
    /* bind the vector column */
    result = SQLBindCol(hindx_stmt, 2, SQL_C_DEFAULT,
                        fields_vector, 16, &fields_vector_len);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = indx_stmt->errormsg;  /* "Couldn't bind column in SQLStatistics."; */
		stmt->errornumber = indx_stmt->errornumber;
		SQLFreeStmt(hindx_stmt, SQL_DROP);
		goto SEEYA;

    }
    /* bind the "is unique" column */
    result = SQLBindCol(hindx_stmt, 3, SQL_C_CHAR,
                        isunique, sizeof(isunique), NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = indx_stmt->errormsg;  /* "Couldn't bind column in SQLStatistics."; */
		stmt->errornumber = indx_stmt->errornumber;
		SQLFreeStmt(hindx_stmt, SQL_DROP);
		goto SEEYA;
    }

    /* bind the "is clustered" column */
    result = SQLBindCol(hindx_stmt, 4, SQL_C_CHAR,
                        isclustered, sizeof(isclustered), NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = indx_stmt->errormsg;  /* "Couldn't bind column in SQLStatistics."; */
		stmt->errornumber = indx_stmt->errornumber;
		SQLFreeStmt(hindx_stmt, SQL_DROP);
		goto SEEYA;

    }

    result = SQLBindCol(hindx_stmt, 5, SQL_C_CHAR,
                        relhasrules, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = indx_stmt->errormsg;
		stmt->errornumber = indx_stmt->errornumber;
		SQLFreeStmt(hindx_stmt, SQL_DROP);
        goto SEEYA;
    }

	/*	fake index of OID */
	if ( relhasrules[0] != '1' && atoi(ci->show_oid_column) && atoi(ci->fake_oid_index)) {
		row = (TupleNode *)malloc(sizeof(TupleNode) + 
					  (13 - 1) * sizeof(TupleField));

		/* no table qualifier */
		set_tuplefield_string(&row->tuple[0], "");
		/* don't set the table owner, else Access tries to use it */
		set_tuplefield_string(&row->tuple[1], "");
		set_tuplefield_string(&row->tuple[2], table_name);

		/* non-unique index? */
		set_tuplefield_int2(&row->tuple[3], (Int2) (globals.unique_index ? FALSE : TRUE));
		
		/* no index qualifier */
		set_tuplefield_string(&row->tuple[4], "");

		sprintf(buf, "%s_idx_fake_oid", table_name);
		set_tuplefield_string(&row->tuple[5], buf);

		/* Clustered index?  I think non-clustered should be type OTHER not HASHED */
		set_tuplefield_int2(&row->tuple[6], (Int2) SQL_INDEX_OTHER);
		set_tuplefield_int2(&row->tuple[7], (Int2) 1);

		set_tuplefield_string(&row->tuple[8], "oid");
		set_tuplefield_string(&row->tuple[9], "A");
		set_tuplefield_null(&row->tuple[10]);
		set_tuplefield_null(&row->tuple[11]);
		set_tuplefield_null(&row->tuple[12]);

		QR_add_tuple(stmt->result, row);
	}

    result = SQLFetch(hindx_stmt);
    while((result == SQL_SUCCESS) || (result == SQL_SUCCESS_WITH_INFO)) {

      /*	If only requesting unique indexs, then just return those. */
		if (fUnique == SQL_INDEX_ALL || 
			(fUnique == SQL_INDEX_UNIQUE && atoi(isunique))) {
			i = 0;
			/* add a row in this table for each field in the index */
			while(i < 8 && fields_vector[i] != 0) {

				row = (TupleNode *)malloc(sizeof(TupleNode) + 
							  (13 - 1) * sizeof(TupleField));

				/* no table qualifier */
				set_tuplefield_string(&row->tuple[0], "");
				/* don't set the table owner, else Access tries to use it */
				set_tuplefield_string(&row->tuple[1], "");
				set_tuplefield_string(&row->tuple[2], table_name);

				/* non-unique index? */
				if (globals.unique_index)
					set_tuplefield_int2(&row->tuple[3], (Int2) (atoi(isunique) ? FALSE : TRUE));
				else
					set_tuplefield_int2(&row->tuple[3], TRUE);
				
				/* no index qualifier */
				set_tuplefield_string(&row->tuple[4], "");
				set_tuplefield_string(&row->tuple[5], index_name);

				/* Clustered index?  I think non-clustered should be type OTHER not HASHED */
				set_tuplefield_int2(&row->tuple[6], (Int2) (atoi(isclustered) ? SQL_INDEX_CLUSTERED : SQL_INDEX_OTHER));
				set_tuplefield_int2(&row->tuple[7], (Int2) (i+1));

				if(fields_vector[i] == OID_ATTNUM) {
					set_tuplefield_string(&row->tuple[8], "oid");
					mylog("SQLStatistics: column name = oid\n");
				}
				else if(fields_vector[i] < 0 || fields_vector[i] > total_columns) {
					set_tuplefield_string(&row->tuple[8], "UNKNOWN");
					mylog("SQLStatistics: column name = UNKNOWN\n");
				}
				else {
					set_tuplefield_string(&row->tuple[8], column_names[fields_vector[i]-1]);
					mylog("SQLStatistics: column name = '%s'\n", column_names[fields_vector[i]-1]);
				}

				set_tuplefield_string(&row->tuple[9], "A");
				set_tuplefield_null(&row->tuple[10]);
				set_tuplefield_null(&row->tuple[11]);
				set_tuplefield_null(&row->tuple[12]);

				QR_add_tuple(stmt->result, row);
				i++;
			}
		}

        result = SQLFetch(hindx_stmt);
    }
    if(result != SQL_NO_DATA_FOUND) {
		stmt->errormsg = SC_create_errormsg(hindx_stmt); /* "SQLFetch failed in SQLStatistics."; */
		stmt->errornumber = indx_stmt->errornumber;
		SQLFreeStmt(hindx_stmt, SQL_DROP);
		goto SEEYA;
    }

	SQLFreeStmt(hindx_stmt, SQL_DROP);

	/* also, things need to think that this statement is finished so */
	/* the results can be retrieved. */
    stmt->status = STMT_FINISHED;

    /* set up the current tuple pointer for SQLFetch */
    stmt->currTuple = -1;
	stmt->rowset_start = -1;
	stmt->current_col = -1;

	error = FALSE;

SEEYA:
	/* These things should be freed on any error ALSO! */
	free(table_name);
    for(i = 0; i < total_columns; i++) {
		free(column_names[i]);
    }
    free(column_names);

	mylog("SQLStatistics(): EXIT, %s, stmt=%u\n", error ? "error" : "success", stmt);

	if (error) {
		SC_log_error(func, "", stmt);
		return SQL_ERROR;
	}
	else
		return SQL_SUCCESS;
}

RETCODE SQL_API SQLColumnPrivileges(
                                    HSTMT        hstmt,
                                    UCHAR FAR *  szTableQualifier,
                                    SWORD        cbTableQualifier,
                                    UCHAR FAR *  szTableOwner,
                                    SWORD        cbTableOwner,
                                    UCHAR FAR *  szTableName,
                                    SWORD        cbTableName,
                                    UCHAR FAR *  szColumnName,
                                    SWORD        cbColumnName)
{
static char *func="SQLColumnPrivileges";

	mylog("%s: entering...\n", func);

/*	Neither Access or Borland care about this. */

	SC_log_error(func, "Function not implemented", (StatementClass *) hstmt);
    return SQL_ERROR;
}


/* SQLPrimaryKeys()
 * Retrieve the primary key columns for the specified table.
 */
RETCODE SQL_API SQLPrimaryKeys(
                               HSTMT         hstmt,
                               UCHAR FAR *   szTableQualifier,
                               SWORD         cbTableQualifier,
                               UCHAR FAR *   szTableOwner,
                               SWORD         cbTableOwner,
                               UCHAR FAR *   szTableName,
                               SWORD         cbTableName)
{
static char *func = "SQLPrimaryKeys";
StatementClass *stmt = (StatementClass *) hstmt;
TupleNode *row;
RETCODE result;
int seq = 0;
HSTMT htbl_stmt;
StatementClass *tbl_stmt;
char tables_query[MAX_STATEMENT_LEN];
char attname[MAX_INFO_STRING];
SDWORD attname_len;
char pktab[MAX_TABLE_LEN + 1];
Int2 result_cols;

	mylog("%s: entering...stmt=%u\n", func, stmt);

    if( ! stmt) {
		SC_log_error(func, "", NULL);
        return SQL_INVALID_HANDLE;
    }
	stmt->manual_result = TRUE;
	stmt->errormsg_created = TRUE;

    stmt->result = QR_Constructor();
    if(!stmt->result) {
        stmt->errormsg = "Couldn't allocate memory for SQLPrimaryKeys result.";
        stmt->errornumber = STMT_NO_MEMORY_ERROR;
		SC_log_error(func, "", stmt);
        return SQL_ERROR;
    }

    /* the binding structure for a statement is not set up until */
    /* a statement is actually executed, so we'll have to do this ourselves. */
	result_cols = 6;
    extend_bindings(stmt, result_cols);
	
    /* set the field names */
    QR_set_num_fields(stmt->result, result_cols);
    QR_set_field_info(stmt->result, 0, "TABLE_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 1, "TABLE_OWNER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 2, "TABLE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 3, "COLUMN_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 4, "KEY_SEQ", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 5, "PK_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);


    result = SQLAllocStmt( stmt->hdbc, &htbl_stmt);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errornumber = STMT_NO_MEMORY_ERROR;
		stmt->errormsg = "Couldn't allocate statement for Primary Key result.";
		SC_log_error(func, "", stmt);
        return SQL_ERROR;
    }
	tbl_stmt = (StatementClass *) htbl_stmt;

	pktab[0] = '\0';
	make_string(szTableName, cbTableName, pktab);
	if ( pktab[0] == '\0') {
		stmt->errormsg = "No Table specified to SQLPrimaryKeys.";
	    stmt->errornumber = STMT_INTERNAL_ERROR;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(htbl_stmt, SQL_DROP);
		return SQL_ERROR;
	}

#if 0
	sprintf(tables_query, "select distinct on (attnum) a2.attname, a2.attnum from pg_attribute a1, pg_attribute a2, pg_class c, pg_index i where c.relname = '%s_pkey' AND c.oid = i.indexrelid AND a1.attrelid = c.oid AND a2.attrelid = c.oid AND (i.indkey[0] = a1.attnum OR i.indkey[1] = a1.attnum OR i.indkey[2] = a1.attnum OR i.indkey[3] = a1.attnum OR i.indkey[4] = a1.attnum OR i.indkey[5] = a1.attnum OR i.indkey[6] = a1.attnum OR i.indkey[7] = a1.attnum) order by a2.attnum", pktab);
#else
	/* Simplified query to remove assumptions about
	 * number of possible index columns.
	 * Courtesy of Tom Lane - thomas 2000-03-21
	 */
	sprintf(tables_query, "select ta.attname, ia.attnum"
			" from pg_attribute ta, pg_attribute ia, pg_class c, pg_index i"
			" where c.relname = '%s_pkey'"
			" AND c.oid = i.indexrelid"
			" AND ia.attrelid = i.indexrelid"
			" AND ta.attrelid = i.indrelid"
			" AND ta.attnum = i.indkey[ia.attnum-1]"
			" order by ia.attnum", pktab);
#endif


	mylog("SQLPrimaryKeys: tables_query='%s'\n", tables_query);

    result = SQLExecDirect(htbl_stmt, tables_query, strlen(tables_query));
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = SC_create_errormsg(htbl_stmt);
		stmt->errornumber = tbl_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLBindCol(htbl_stmt, 1, SQL_C_CHAR,
                        attname, MAX_INFO_STRING, &attname_len);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errormsg = tbl_stmt->errormsg;
		stmt->errornumber = tbl_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = SQLFetch(htbl_stmt);

    while((result == SQL_SUCCESS) || (result == SQL_SUCCESS_WITH_INFO)) {

        row = (TupleNode *)malloc(sizeof(TupleNode) + (result_cols - 1) * sizeof(TupleField));

        set_tuplefield_null(&row->tuple[0]);

		/* I have to hide the table owner from Access, otherwise it
		 * insists on referring to the table as 'owner.table'.
		 * (this is valid according to the ODBC SQL grammar, but
		 * Postgres won't support it.)
		 */
        set_tuplefield_string(&row->tuple[1], "");
        set_tuplefield_string(&row->tuple[2], pktab);
        set_tuplefield_string(&row->tuple[3], attname);
		set_tuplefield_int2(&row->tuple[4], (Int2) (++seq));
		set_tuplefield_null(&row->tuple[5]);

        QR_add_tuple(stmt->result, row);

		mylog(">> primaryKeys: pktab = '%s', attname = '%s', seq = %d\n", pktab, attname, seq);

        result = SQLFetch(htbl_stmt);
    }

    if(result != SQL_NO_DATA_FOUND) {
		stmt->errormsg = SC_create_errormsg(htbl_stmt);
		stmt->errornumber = tbl_stmt->errornumber;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }

	SQLFreeStmt(htbl_stmt, SQL_DROP);


	/* also, things need to think that this statement is finished so */
	/* the results can be retrieved. */
    stmt->status = STMT_FINISHED;

    /* set up the current tuple pointer for SQLFetch */
    stmt->currTuple = -1;
	stmt->rowset_start = -1;
	stmt->current_col = -1;

	mylog("SQLPrimaryKeys(): EXIT, stmt=%u\n", stmt);
    return SQL_SUCCESS;
}

RETCODE SQL_API SQLForeignKeys(
                               HSTMT         hstmt,
                               UCHAR FAR *   szPkTableQualifier,
                               SWORD         cbPkTableQualifier,
                               UCHAR FAR *   szPkTableOwner,
                               SWORD         cbPkTableOwner,
                               UCHAR FAR *   szPkTableName,
                               SWORD         cbPkTableName,
                               UCHAR FAR *   szFkTableQualifier,
                               SWORD         cbFkTableQualifier,
                               UCHAR FAR *   szFkTableOwner,
                               SWORD         cbFkTableOwner,
                               UCHAR FAR *   szFkTableName,
                               SWORD         cbFkTableName)
{
static char *func = "SQLForeignKeys";
StatementClass *stmt = (StatementClass *) hstmt;
TupleNode *row;
HSTMT htbl_stmt, hpkey_stmt;
StatementClass *tbl_stmt;
RETCODE result, keyresult;
char tables_query[MAX_STATEMENT_LEN];
char args[1024], tgname[MAX_INFO_STRING];
char pktab[MAX_TABLE_LEN + 1], fktab[MAX_TABLE_LEN + 1];
char *ptr, *pkey_ptr, *pkptr, *fkptr, *frel, *prel;
int i, k, pkeys, seq, ntabs;
SWORD nargs, rule_type, action;
char pkey[MAX_INFO_STRING];
Int2 result_cols;


	mylog("%s: entering...stmt=%u\n", func, stmt);


    if( ! stmt) {
		SC_log_error(func, "", NULL);
        return SQL_INVALID_HANDLE;
    }
	stmt->manual_result = TRUE;
	stmt->errormsg_created = TRUE;

    stmt->result = QR_Constructor();
    if(!stmt->result) {
		stmt->errormsg = "Couldn't allocate memory for SQLForeignKeys result.";
        stmt->errornumber = STMT_NO_MEMORY_ERROR;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    /* the binding structure for a statement is not set up until */
    /* a statement is actually executed, so we'll have to do this ourselves. */
	result_cols = 14;
    extend_bindings(stmt, result_cols);

    /* set the field names */
    QR_set_num_fields(stmt->result, result_cols);
    QR_set_field_info(stmt->result, 0, "PKTABLE_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 1, "PKTABLE_OWNER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 2, "PKTABLE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 3, "PKCOLUMN_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 4, "FKTABLE_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 5, "FKTABLE_OWNER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 6, "FKTABLE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 7, "FKCOLUMN_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 8, "KEY_SEQ", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 9, "UPDATE_RULE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 10, "DELETE_RULE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 11, "FK_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 12, "PK_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 13, "TRIGGER_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);

    /* also, things need to think that this statement is finished so */
    /* the results can be retrieved. */
    stmt->status = STMT_FINISHED;

    /* set up the current tuple pointer for SQLFetch */
    stmt->currTuple = -1;
	stmt->rowset_start = -1;
	stmt->current_col = -1;


    result = SQLAllocStmt( stmt->hdbc, &htbl_stmt);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
		stmt->errornumber = STMT_NO_MEMORY_ERROR;
		stmt->errormsg = "Couldn't allocate statement for SQLForeignKeys result.";
		SC_log_error(func, "", stmt);
        return SQL_ERROR;
    }

	tbl_stmt = (StatementClass *) htbl_stmt;

	pktab[0] = '\0';
	fktab[0] = '\0';

	make_string(szPkTableName, cbPkTableName, pktab);
	make_string(szFkTableName, cbFkTableName, fktab);


	/*	Case #2 -- Get the foreign keys in the specified table (fktab) that 
		refer to the primary keys of other table(s).
	*/
	if (fktab[0] != '\0') {

		sprintf(tables_query, "select pg_trigger.tgargs, pg_trigger.tgnargs, pg_trigger.tgname"
				" from pg_proc, pg_trigger, pg_class"
				" where pg_proc.oid = pg_trigger.tgfoid and pg_trigger.tgrelid = pg_class.oid"
				" AND pg_proc.proname = 'check_primary_key' AND pg_class.relname = '%s'",
				fktab);

		result = SQLExecDirect(htbl_stmt, tables_query, strlen(tables_query));
		if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
			stmt->errormsg = SC_create_errormsg(htbl_stmt);
			stmt->errornumber = tbl_stmt->errornumber;
			SC_log_error(func, "", stmt);
    		SQLFreeStmt(htbl_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		result = SQLBindCol(htbl_stmt, 1, SQL_C_BINARY,
							args, MAX_INFO_STRING, NULL);
		if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
			stmt->errormsg = tbl_stmt->errormsg;
			stmt->errornumber = tbl_stmt->errornumber;
			SC_log_error(func, "", stmt);
			SQLFreeStmt(htbl_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		result = SQLBindCol(htbl_stmt, 2, SQL_C_SHORT,
							&nargs, 0, NULL);
		if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
			stmt->errormsg = tbl_stmt->errormsg;
			stmt->errornumber = tbl_stmt->errornumber;
			SC_log_error(func, "", stmt);
			SQLFreeStmt(htbl_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		result = SQLBindCol(htbl_stmt, 3, SQL_C_CHAR,
							tgname, sizeof(tgname), NULL);
		if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
			stmt->errormsg = tbl_stmt->errormsg;
			stmt->errornumber = tbl_stmt->errornumber;
			SC_log_error(func, "", stmt);
			SQLFreeStmt(htbl_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		result = SQLFetch(htbl_stmt);
		if (result == SQL_NO_DATA_FOUND)
			return SQL_SUCCESS;

		if(result != SQL_SUCCESS) {
			stmt->errormsg = SC_create_errormsg(htbl_stmt);
			stmt->errornumber = tbl_stmt->errornumber;
			SC_log_error(func, "", stmt);
			SQLFreeStmt(htbl_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		keyresult = SQLAllocStmt( stmt->hdbc, &hpkey_stmt);
		if((keyresult != SQL_SUCCESS) && (keyresult != SQL_SUCCESS_WITH_INFO)) {
			stmt->errornumber = STMT_NO_MEMORY_ERROR;
			stmt->errormsg = "Couldn't allocate statement for SQLForeignKeys (pkeys) result.";
			SC_log_error(func, "", stmt);
			return SQL_ERROR;
		}

		keyresult = SQLBindCol(hpkey_stmt, 4, SQL_C_CHAR,
								pkey, sizeof(pkey), NULL);
		if (keyresult != SQL_SUCCESS) {
			stmt->errornumber = STMT_NO_MEMORY_ERROR;
			stmt->errormsg = "Couldn't bindcol for primary keys for SQLForeignKeys result.";
			SC_log_error(func, "", stmt);
			SQLFreeStmt(hpkey_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		while (result == SQL_SUCCESS) {

			/*	Compute the number of keyparts.	*/
			pkeys = nargs / 2;

			mylog("Foreign Key Case#2: nargs = %d, pkeys = %d\n", nargs, pkeys);

			ptr = args;

			/*	Get to the PK Table Name */
			for (k = 0; k < pkeys; k++)
				ptr += strlen(ptr) + 1;

			prel = ptr;

			mylog("prel = '%s'\n", prel);

			/*	If there is a pk table specified, then check it. */
			if (pktab[0] != '\0') {

				/*	If it doesn't match, then continue */
				if ( strcmp(prel, pktab)) {	
					result = SQLFetch(htbl_stmt);
					continue;
				}
			}

			keyresult = SQLPrimaryKeys(hpkey_stmt, NULL, 0, NULL, 0, prel, SQL_NTS);
			if (keyresult != SQL_SUCCESS) {
				stmt->errornumber = STMT_NO_MEMORY_ERROR;
				stmt->errormsg = "Couldn't get primary keys for SQLForeignKeys result.";
				SC_log_error(func, "", stmt);
				SQLFreeStmt(hpkey_stmt, SQL_DROP);
				return SQL_ERROR;
			}


			/*	Check that the key listed is the primary key */
			keyresult = SQLFetch(hpkey_stmt);
			for (k = 0; k < pkeys; k++) {

				ptr += strlen(ptr) + 1;
				if ( keyresult != SQL_SUCCESS || strcmp(ptr, pkey)) {
					pkeys = 0;
					break;
				}
				keyresult = SQLFetch(hpkey_stmt);
			}
			ptr = prel;



			/*	Set to first fk column */
			fkptr = args;
			seq = 0;

			for (k = 0; k < pkeys; k++) {

				row = (TupleNode *)malloc(sizeof(TupleNode) + (result_cols - 1) * sizeof(TupleField));

				set_tuplefield_null(&row->tuple[0]);
				set_tuplefield_string(&row->tuple[1], "");

				set_tuplefield_string(&row->tuple[2], prel);

				/*	Get to the primary key */
				ptr += strlen(ptr) + 1;

				mylog("prel = '%s', ptr = '%s'\n", prel, ptr);

				set_tuplefield_string(&row->tuple[3], ptr);
				set_tuplefield_null(&row->tuple[4]);
				set_tuplefield_string(&row->tuple[5], "");

				set_tuplefield_string(&row->tuple[6], fktab);
				set_tuplefield_string(&row->tuple[7], fkptr);

				mylog("fktab = '%s', fkptr = '%s'\n", fktab, fkptr);

				set_tuplefield_int2(&row->tuple[8], (Int2) (++seq));
				set_tuplefield_null(&row->tuple[9]);
				set_tuplefield_null(&row->tuple[10]);
				set_tuplefield_null(&row->tuple[11]);
				set_tuplefield_null(&row->tuple[12]);

				set_tuplefield_string(&row->tuple[13], tgname);

				QR_add_tuple(stmt->result, row);

				/*	next foreign key */
				fkptr += strlen(fkptr) + 1;

			}

			result = SQLFetch(htbl_stmt);
		}
	}

	/*	Case #1 -- Get the foreign keys in other tables that refer to the primary key
		in the specified table (pktab).  i.e., Who points to me?
	*/
    else if (pktab[0] != '\0') {

		sprintf(tables_query, "select pg_trigger.tgargs, pg_trigger.tgnargs"
				", pg_trigger.tgtype, pg_trigger.tgname"
				" from pg_proc, pg_trigger, pg_class"
				" where pg_proc.oid = pg_trigger.tgfoid and pg_trigger.tgrelid = pg_class.oid"
				" AND pg_proc.proname = 'check_foreign_key' AND pg_class.relname = '%s'",
				pktab);

		result = SQLExecDirect(htbl_stmt, tables_query, strlen(tables_query));
		if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
			stmt->errormsg = SC_create_errormsg(htbl_stmt);
			stmt->errornumber = tbl_stmt->errornumber;
			SC_log_error(func, "", stmt);
    		SQLFreeStmt(htbl_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		result = SQLBindCol(htbl_stmt, 1, SQL_C_BINARY,
							args, sizeof(args), NULL);
		if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
			stmt->errormsg = tbl_stmt->errormsg;
			stmt->errornumber = tbl_stmt->errornumber;
			SC_log_error(func, "", stmt);
			SQLFreeStmt(htbl_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		result = SQLBindCol(htbl_stmt, 2, SQL_C_SHORT,
							&nargs, 0, NULL);
		if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
			stmt->errormsg = tbl_stmt->errormsg;
			stmt->errornumber = tbl_stmt->errornumber;
			SC_log_error(func, "", stmt);
			SQLFreeStmt(htbl_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		result = SQLBindCol(htbl_stmt, 3, SQL_C_SHORT,
							&rule_type, 0, NULL);
		if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
			stmt->errormsg = tbl_stmt->errormsg;
			stmt->errornumber = tbl_stmt->errornumber;
			SC_log_error(func, "", stmt);
			SQLFreeStmt(htbl_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		result = SQLBindCol(htbl_stmt, 4, SQL_C_CHAR,
							tgname, sizeof(tgname), NULL);
		if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
			stmt->errormsg = tbl_stmt->errormsg;
			stmt->errornumber = tbl_stmt->errornumber;
			SC_log_error(func, "", stmt);
			SQLFreeStmt(htbl_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		result = SQLFetch(htbl_stmt);
		if (result == SQL_NO_DATA_FOUND)
			return SQL_SUCCESS;

		if(result != SQL_SUCCESS) {
			stmt->errormsg = SC_create_errormsg(htbl_stmt);
			stmt->errornumber = tbl_stmt->errornumber;
			SC_log_error(func, "", stmt);
			SQLFreeStmt(htbl_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		keyresult = SQLAllocStmt( stmt->hdbc, &hpkey_stmt);
		if((keyresult != SQL_SUCCESS) && (keyresult != SQL_SUCCESS_WITH_INFO)) {
			stmt->errornumber = STMT_NO_MEMORY_ERROR;
			stmt->errormsg = "Couldn't allocate statement for SQLForeignKeys (pkeys) result.";
			SC_log_error(func, "", stmt);
			return SQL_ERROR;
		}

		keyresult = SQLPrimaryKeys(hpkey_stmt, NULL, 0, NULL, 0, pktab, SQL_NTS);
		if (keyresult != SQL_SUCCESS) {
			stmt->errornumber = STMT_NO_MEMORY_ERROR;
			stmt->errormsg = "Couldn't get primary keys for SQLForeignKeys result.";
			SC_log_error(func, "", stmt);
			SQLFreeStmt(hpkey_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		keyresult = SQLBindCol(hpkey_stmt, 4, SQL_C_CHAR,
								pkey, sizeof(pkey), NULL);
		if (keyresult != SQL_SUCCESS) {
			stmt->errornumber = STMT_NO_MEMORY_ERROR;
			stmt->errormsg = "Couldn't bindcol for primary keys for SQLForeignKeys result.";
			SC_log_error(func, "", stmt);
			SQLFreeStmt(hpkey_stmt, SQL_DROP);
			return SQL_ERROR;
		}

		while (result == SQL_SUCCESS) {
		  /*	Get the number of tables */
			ptr = args;
			ntabs = atoi(args);
			ptr += strlen(ptr) + 1;


			/*	Handle action (i.e., 'cascade', 'restrict', 'setnull') */
			switch(tolower(ptr[0])) {
			case 'c':	
				action = SQL_CASCADE;
				break;
			case 'r':
				action = SQL_RESTRICT;
				break;
			case 's':
				action = SQL_SET_NULL;
				break;
			default:
				action = -1;
				break;
			}

			rule_type >>= TRIGGER_SHIFT;
			ptr += strlen(ptr) + 1;

			/*	Calculate the number of key parts */
			pkeys = (nargs - ( 2 + ntabs)) / (ntabs + 1);
			pkey_ptr = ptr;


			keyresult = SQLExtendedFetch(hpkey_stmt, SQL_FETCH_FIRST, -1, NULL, NULL);
			if ( keyresult != SQL_SUCCESS || strcmp(pkey, ptr)) {
				ntabs = 0;
			}

			/*	Get to the last primary keypart */
			for (i = 1; i < pkeys; i++) {

				/*	If keypart doesnt match, skip this entry */
				if ( keyresult != SQL_SUCCESS || strcmp(pkey, ptr)) {
					ntabs = 0;
					break;
				}
				ptr += strlen(ptr) + 1;

				keyresult = SQLExtendedFetch(hpkey_stmt, SQL_FETCH_NEXT, -1, NULL, NULL);
			}
				
			mylog("Foreign Key Case#1: nargs = %d, ntabs = %d, pkeys = %d\n", nargs, ntabs, pkeys);


			/*	Get Foreign Key Tables */
			for (i = 0; i < ntabs; i++) {

				seq = 0;
				pkptr = pkey_ptr;

				ptr += strlen(ptr) + 1;
				frel = ptr;

				for (k = 0; k < pkeys; k++) {

					row = (TupleNode *)malloc(sizeof(TupleNode) + (result_cols - 1) * sizeof(TupleField));

					set_tuplefield_null(&row->tuple[0]);
					set_tuplefield_string(&row->tuple[1], "");

					set_tuplefield_string(&row->tuple[2], pktab);
					set_tuplefield_string(&row->tuple[3], pkptr);

					mylog("pktab = '%s', pkptr = '%s'\n", pktab, pkptr);

					set_tuplefield_null(&row->tuple[4]);
					set_tuplefield_string(&row->tuple[5], "");
					set_tuplefield_string(&row->tuple[6], frel);

					/*	Get to the foreign key */
					ptr += strlen(ptr) + 1;

					set_tuplefield_string(&row->tuple[7], ptr);

					mylog("frel = '%s', ptr = '%s'\n", frel, ptr);
					mylog("rule_type = %d, action = %d\n", rule_type, action);

					set_tuplefield_int2(&row->tuple[8], (Int2) (++seq));

					set_nullfield_int2(&row->tuple[9], (Int2) ((rule_type & TRIGGER_UPDATE) ? action : -1));
					set_nullfield_int2(&row->tuple[10], (Int2) ((rule_type & TRIGGER_DELETE) ? action : -1));

					set_tuplefield_null(&row->tuple[11]);
					set_tuplefield_null(&row->tuple[12]);

					set_tuplefield_string(&row->tuple[13], tgname);

					QR_add_tuple(stmt->result, row);

					/*	next primary key */
					pkptr += strlen(pkptr) + 1;

				}

			}

			result = SQLFetch(htbl_stmt);
		}
    }
	else {
		stmt->errormsg = "No tables specified to SQLForeignKeys.";
		stmt->errornumber = STMT_INTERNAL_ERROR;
		SC_log_error(func, "", stmt);
		SQLFreeStmt(htbl_stmt, SQL_DROP);
		return SQL_ERROR;
	}

	SQLFreeStmt(htbl_stmt, SQL_DROP);
	SQLFreeStmt(hpkey_stmt, SQL_DROP);

	mylog("SQLForeignKeys(): EXIT, stmt=%u\n", stmt);
    return SQL_SUCCESS;
}



RETCODE SQL_API SQLProcedureColumns(
                                    HSTMT         hstmt,
                                    UCHAR FAR *   szProcQualifier,
                                    SWORD         cbProcQualifier,
                                    UCHAR FAR *   szProcOwner,
                                    SWORD         cbProcOwner,
                                    UCHAR FAR *   szProcName,
                                    SWORD         cbProcName,
                                    UCHAR FAR *   szColumnName,
                                    SWORD         cbColumnName)
{
static char *func="SQLProcedureColumns";

	mylog("%s: entering...\n", func);

	SC_log_error(func, "Function not implemented", (StatementClass *) hstmt);
    return SQL_ERROR;
}

RETCODE SQL_API SQLProcedures(
                              HSTMT          hstmt,
                              UCHAR FAR *    szProcQualifier,
                              SWORD          cbProcQualifier,
                              UCHAR FAR *    szProcOwner,
                              SWORD          cbProcOwner,
                              UCHAR FAR *    szProcName,
                              SWORD          cbProcName)
{
static char *func="SQLProcedures";

	mylog("%s: entering...\n", func);

	SC_log_error(func, "Function not implemented", (StatementClass *) hstmt);
    return SQL_ERROR;
}

RETCODE SQL_API SQLTablePrivileges(
                                   HSTMT           hstmt,
                                   UCHAR FAR *     szTableQualifier,
                                   SWORD           cbTableQualifier,
                                   UCHAR FAR *     szTableOwner,
                                   SWORD           cbTableOwner,
                                   UCHAR FAR *     szTableName,
                                   SWORD           cbTableName)
{
static char *func="SQLTablePrivileges";

	mylog("%s: entering...\n", func);

	SC_log_error(func, "Function not implemented", (StatementClass *) hstmt);
    return SQL_ERROR;
}
