1 /*-------------------------------------------------------------------------
2  *
3  * parse_clause.h
4  *	  handle clauses in parser
5  *
6  *
7  * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
8  * Portions Copyright (c) 1994, Regents of the University of California
9  *
10  * src/include/parser/parse_clause.h
11  *
12  *-------------------------------------------------------------------------
13  */
14 #ifndef PARSE_CLAUSE_H
15 #define PARSE_CLAUSE_H
16 
17 #include "parser/parse_node.h"
18 
19 extern void transformFromClause(ParseState *pstate, List *frmList);
20 extern int	setTargetTable(ParseState *pstate, RangeVar *relation,
21 						   bool inh, bool alsoSource, AclMode requiredPerms);
22 
23 extern Node *transformWhereClause(ParseState *pstate, Node *clause,
24 								  ParseExprKind exprKind, const char *constructName);
25 extern Node *transformLimitClause(ParseState *pstate, Node *clause,
26 								  ParseExprKind exprKind, const char *constructName,
27 								  LimitOption limitOption);
28 extern List *transformGroupClause(ParseState *pstate, List *grouplist,
29 								  List **groupingSets,
30 								  List **targetlist, List *sortClause,
31 								  ParseExprKind exprKind, bool useSQL99);
32 extern List *transformSortClause(ParseState *pstate, List *orderlist,
33 								 List **targetlist, ParseExprKind exprKind,
34 								 bool useSQL99);
35 
36 extern List *transformWindowDefinitions(ParseState *pstate,
37 										List *windowdefs,
38 										List **targetlist);
39 
40 extern List *transformDistinctClause(ParseState *pstate,
41 									 List **targetlist, List *sortClause, bool is_agg);
42 extern List *transformDistinctOnClause(ParseState *pstate, List *distinctlist,
43 									   List **targetlist, List *sortClause);
44 extern void transformOnConflictArbiter(ParseState *pstate,
45 									   OnConflictClause *onConflictClause,
46 									   List **arbiterExpr, Node **arbiterWhere,
47 									   Oid *constraint);
48 
49 extern List *addTargetToSortList(ParseState *pstate, TargetEntry *tle,
50 								 List *sortlist, List *targetlist, SortBy *sortby);
51 extern Index assignSortGroupRef(TargetEntry *tle, List *tlist);
52 extern bool targetIsInSortList(TargetEntry *tle, Oid sortop, List *sortList);
53 
54 #endif							/* PARSE_CLAUSE_H */
55