1 /*------------------------------------------------------------------------- 2 * 3 * clauses.h 4 * prototypes for clauses.c. 5 * 6 * 7 * Portions Copyright (c) 1996-2019, 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 "access/htup.h" 18 #include "nodes/pathnodes.h" 19 20 typedef struct 21 { 22 int numWindowFuncs; /* total number of WindowFuncs found */ 23 Index maxWinRef; /* windowFuncs[] is indexed 0 .. maxWinRef */ 24 List **windowFuncs; /* lists of WindowFuncs for each winref */ 25 } WindowFuncLists; 26 27 extern bool contain_agg_clause(Node *clause); 28 extern void get_agg_clause_costs(PlannerInfo *root, Node *clause, 29 AggSplit aggsplit, AggClauseCosts *costs); 30 31 extern bool contain_window_function(Node *clause); 32 extern WindowFuncLists *find_window_functions(Node *clause, Index maxWinRef); 33 34 extern double expression_returns_set_rows(PlannerInfo *root, Node *clause); 35 36 extern bool contain_subplans(Node *clause); 37 38 extern char max_parallel_hazard(Query *parse); 39 extern bool is_parallel_safe(PlannerInfo *root, Node *node); 40 extern bool contain_nonstrict_functions(Node *clause); 41 extern bool contain_exec_param(Node *clause, List *param_ids); 42 extern bool contain_leaked_vars(Node *clause); 43 44 extern Relids find_nonnullable_rels(Node *clause); 45 extern List *find_nonnullable_vars(Node *clause); 46 extern List *find_forced_null_vars(Node *clause); 47 extern Var *find_forced_null_var(Node *clause); 48 49 extern bool is_pseudo_constant_clause(Node *clause); 50 extern bool is_pseudo_constant_clause_relids(Node *clause, Relids relids); 51 52 extern int NumRelids(Node *clause); 53 extern int NumRelids_new(PlannerInfo *root, Node *clause); 54 55 extern void CommuteOpExpr(OpExpr *clause); 56 57 extern Query *inline_set_returning_function(PlannerInfo *root, 58 RangeTblEntry *rte); 59 60 #endif /* CLAUSES_H */ 61