/*-------------------------------------------------------------------------
 *
 * parse_relation.h
 *	  prototypes for parse_relation.c.
 *
 *
 * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $PostgreSQL: pgsql/src/include/parser/parse_relation.h,v 1.45 2004/08/19 20:57:41 tgl Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef PARSE_RELATION_H
#define PARSE_RELATION_H

#include "parser/parse_node.h"

extern bool add_missing_from;

extern RangeTblEntry *refnameRangeTblEntry(ParseState *pstate,
					 const char *schemaname,
					 const char *refname,
					 int *sublevels_up);
extern void checkNameSpaceConflicts(ParseState *pstate, Node *namespace1,
						Node *namespace2);
extern int RTERangeTablePosn(ParseState *pstate,
				  RangeTblEntry *rte,
				  int *sublevels_up);
extern RangeTblEntry *GetRTEByRangeTablePosn(ParseState *pstate,
											 int varno,
											 int sublevels_up);
extern List *GetLevelNRangeTable(ParseState *pstate, int sublevels_up);
extern Node *scanRTEForColumn(ParseState *pstate, RangeTblEntry *rte,
							  char *colname);
extern Node *colNameToVar(ParseState *pstate, char *colname, bool localonly);
extern Node *qualifiedNameToVar(ParseState *pstate,
				   char *schemaname,
				   char *refname,
				   char *colname,
				   bool implicitRTEOK);
extern RangeTblEntry *addRangeTableEntry(ParseState *pstate,
				   RangeVar *relation,
				   Alias *alias,
				   bool inh,
				   bool inFromCl);
extern RangeTblEntry *addRangeTableEntryForRelation(ParseState *pstate,
							  Oid relid,
							  Alias *alias,
							  bool inh,
							  bool inFromCl);
extern RangeTblEntry *addRangeTableEntryForSubquery(ParseState *pstate,
							  Query *subquery,
							  Alias *alias,
							  bool inFromCl);
extern RangeTblEntry *addRangeTableEntryForFunction(ParseState *pstate,
							  char *funcname,
							  Node *funcexpr,
							  RangeFunction *rangefunc,
							  bool inFromCl);
extern RangeTblEntry *addRangeTableEntryForJoin(ParseState *pstate,
						  List *colnames,
						  JoinType jointype,
						  List *aliasvars,
						  Alias *alias,
						  bool inFromCl);
extern void addRTEtoQuery(ParseState *pstate, RangeTblEntry *rte,
			  bool addToJoinList, bool addToNameSpace);
extern RangeTblEntry *addImplicitRTE(ParseState *pstate, RangeVar *relation);
extern void expandRTE(List *rtable, int rtindex, int sublevels_up,
					  bool include_dropped,
					  List **colnames, List **colvars);
extern List *expandRelAttrs(ParseState *pstate, List *rtable,
							int rtindex, int sublevels_up);
extern int	attnameAttNum(Relation rd, const char *attname, bool sysColOK);
extern Name attnumAttName(Relation rd, int attid);
extern Oid	attnumTypeId(Relation rd, int attid);

#endif   /* PARSE_RELATION_H */
