parse_clause.h

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/*-------------------------------------------------------------------------
 *
 * parse_clause.h
 *    handle clauses in parser
 *
 *
 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/parser/parse_clause.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef PARSE_CLAUSE_H
#define PARSE_CLAUSE_H
 
#include "parser/parse_node.h"
 
extern void transformFromClause(ParseState *pstate, List *frmList);
extern int  setTargetTable(ParseState *pstate, RangeVar *relation,
                           bool inh, bool alsoSource, AclMode requiredPerms);
 
extern Node *transformWhereClause(ParseState *pstate, Node *clause,
                                  ParseExprKind exprKind, const char *constructName);
extern Node *transformLimitClause(ParseState *pstate, Node *clause,
                                  ParseExprKind exprKind, const char *constructName,
                                  LimitOption limitOption);
extern List *transformGroupClause(ParseState *pstate, List *grouplist,
                                  List **groupingSets,
                                  List **targetlist, List *sortClause,
                                  ParseExprKind exprKind, bool useSQL99);
extern List *transformSortClause(ParseState *pstate, List *orderlist,
                                 List **targetlist, ParseExprKind exprKind,
                                 bool useSQL99);
 
extern List *transformWindowDefinitions(ParseState *pstate,
                                        List *windowdefs,
                                        List **targetlist);
 
extern List *transformDistinctClause(ParseState *pstate,
                                     List **targetlist, List *sortClause, bool is_agg);
extern List *transformDistinctOnClause(ParseState *pstate, List *distinctlist,
                                       List **targetlist, List *sortClause);
extern void transformOnConflictArbiter(ParseState *pstate,
                                       OnConflictClause *onConflictClause,
                                       List **arbiterExpr, Node **arbiterWhere,
                                       Oid *constraint);
 
extern List *addTargetToSortList(ParseState *pstate, TargetEntry *tle,
                                 List *sortlist, List *targetlist, SortBy *sortby);
extern Index assignSortGroupRef(TargetEntry *tle, List *tlist);
extern bool targetIsInSortList(TargetEntry *tle, Oid sortop, List *sortList);
 
/* functions in parse_jsontable.c */
extern ParseNamespaceItem *transformJsonTable(ParseState *pstate, JsonTable *jt);
 
#endif                          /* PARSE_CLAUSE_H */