/*-------------------------------------------------------------------------
 *
 * parse_relation.h
 *	  prototypes for parse_relation.c.
 *
 *
 * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $Id: parse_relation.h,v 1.33 2002/05/12 20:10:05 tgl Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef PARSE_RELATION_H
#define PARSE_RELATION_H

#include "parser/parse_node.h"

extern RangeTblEntry *refnameRangeTblEntry(ParseState *pstate,
						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 Node *colnameToVar(ParseState *pstate, char *colname);
extern Node *qualifiedNameToVar(ParseState *pstate, 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,
													Alias *alias,
													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(ParseState *pstate, RangeTblEntry *rte,
		  List **colnames, List **colvars);
extern List *expandRelAttrs(ParseState *pstate, RangeTblEntry *rte);
extern int	attnameAttNum(Relation rd, char *a);
extern Name attnumAttName(Relation rd, int attid);
extern Oid	attnumTypeId(Relation rd, int attid);

#endif   /* PARSE_RELATION_H */
