mirror of
https://git.postgresql.org/git/postgresql.git
synced 2026-02-12 09:27:04 +08:00
e5536e77a5
into nodes/nodeFuncs, so as to reduce wanton cross-subsystem #includes inside the backend. There's probably more that should be done along this line, but this is a start anyway.
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/*-------------------------------------------------------------------------
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*
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* clauses.h
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* prototypes for clauses.c.
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*
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*
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* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/optimizer/clauses.h,v 1.94 2008/08/25 22:42:34 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef CLAUSES_H
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#define CLAUSES_H
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#include "nodes/relation.h"
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#define is_opclause(clause) ((clause) != NULL && IsA(clause, OpExpr))
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#define is_funcclause(clause) ((clause) != NULL && IsA(clause, FuncExpr))
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typedef struct
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{
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int numAggs; /* total number of aggregate calls */
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int numDistinctAggs; /* number that use DISTINCT */
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Size transitionSpace; /* for pass-by-ref transition data */
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} AggClauseCounts;
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extern Expr *make_opclause(Oid opno, Oid opresulttype, bool opretset,
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Expr *leftop, Expr *rightop);
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extern Node *get_leftop(Expr *clause);
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extern Node *get_rightop(Expr *clause);
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extern bool not_clause(Node *clause);
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extern Expr *make_notclause(Expr *notclause);
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extern Expr *get_notclausearg(Expr *notclause);
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extern bool or_clause(Node *clause);
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extern Expr *make_orclause(List *orclauses);
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extern bool and_clause(Node *clause);
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extern Expr *make_andclause(List *andclauses);
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extern Node *make_and_qual(Node *qual1, Node *qual2);
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extern Expr *make_ands_explicit(List *andclauses);
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extern List *make_ands_implicit(Expr *clause);
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extern bool contain_agg_clause(Node *clause);
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extern void count_agg_clauses(Node *clause, AggClauseCounts *counts);
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extern double expression_returns_set_rows(Node *clause);
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extern bool contain_subplans(Node *clause);
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extern bool contain_mutable_functions(Node *clause);
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extern bool contain_volatile_functions(Node *clause);
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extern bool contain_nonstrict_functions(Node *clause);
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extern Relids find_nonnullable_rels(Node *clause);
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extern List *find_nonnullable_vars(Node *clause);
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extern List *find_forced_null_vars(Node *clause);
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extern Var *find_forced_null_var(Node *clause);
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extern bool is_pseudo_constant_clause(Node *clause);
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extern bool is_pseudo_constant_clause_relids(Node *clause, Relids relids);
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extern int NumRelids(Node *clause);
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extern void CommuteOpExpr(OpExpr *clause);
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extern void CommuteRowCompareExpr(RowCompareExpr *clause);
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extern Node *strip_implicit_coercions(Node *node);
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extern void set_coercionform_dontcare(Node *node);
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extern Node *eval_const_expressions(PlannerInfo *root, Node *node);
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extern Node *estimate_expression_value(PlannerInfo *root, Node *node);
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extern Query *inline_set_returning_function(PlannerInfo *root, Node *node);
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#endif /* CLAUSES_H */
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