1 /*------------------------------------------------------------------------- 2 * 3 * clauses.h 4 * prototypes for clauses.c. 5 * 6 * 7 * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group 8 * Portions Copyright (c) 1994, Regents of the University of California 9 * 10 * src/include/optimizer/clauses.h 11 * 12 *------------------------------------------------------------------------- 13 */ 14 #ifndef CLAUSES_H 15 #define CLAUSES_H 16 17 #include "nodes/pathnodes.h" 18 19 typedef struct 20 { 21 int numWindowFuncs; /* total number of WindowFuncs found */ 22 Index maxWinRef; /* windowFuncs[] is indexed 0 .. maxWinRef */ 23 List **windowFuncs; /* lists of WindowFuncs for each winref */ 24 } WindowFuncLists; 25 26 extern bool contain_agg_clause(Node *clause); 27 28 extern bool contain_window_function(Node *clause); 29 extern WindowFuncLists *find_window_functions(Node *clause, Index maxWinRef); 30 31 extern double expression_returns_set_rows(PlannerInfo *root, Node *clause); 32 33 extern bool contain_subplans(Node *clause); 34 35 extern char max_parallel_hazard(Query *parse); 36 extern bool is_parallel_safe(PlannerInfo *root, Node *node); 37 extern bool contain_nonstrict_functions(Node *clause); 38 extern bool contain_exec_param(Node *clause, List *param_ids); 39 extern bool contain_leaked_vars(Node *clause); 40 41 extern Relids find_nonnullable_rels(Node *clause); 42 extern List *find_nonnullable_vars(Node *clause); 43 extern List *find_forced_null_vars(Node *clause); 44 extern Var *find_forced_null_var(Node *clause); 45 46 extern bool is_pseudo_constant_clause(Node *clause); 47 extern bool is_pseudo_constant_clause_relids(Node *clause, Relids relids); 48 49 extern int NumRelids(PlannerInfo *root, Node *clause); 50 51 extern void CommuteOpExpr(OpExpr *clause); 52 53 extern Query *inline_set_returning_function(PlannerInfo *root, 54 RangeTblEntry *rte); 55 56 #endif /* CLAUSES_H */ 57