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c2dc7b9e15
It's possible that a subplan below a Memoize node contains a parameter from above the Memoize node. If this parameter changes then cache entries may become out-dated due to the new parameter value. Previously Memoize was mistakenly not aware of this. We fix this here by flushing the cache whenever a parameter that's not part of the cache key changes. Bug: #17213 Reported by: Elvis Pranskevichus Author: David Rowley Discussion: https://postgr.es/m/17213-988ed34b225a2862@postgresql.org Backpatch-through: 14, where Memoize was added
59 lines
1.8 KiB
C
59 lines
1.8 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) 1996-2021, 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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* src/include/optimizer/clauses.h
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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/pathnodes.h"
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typedef struct
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{
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int numWindowFuncs; /* total number of WindowFuncs found */
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Index maxWinRef; /* windowFuncs[] is indexed 0 .. maxWinRef */
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List **windowFuncs; /* lists of WindowFuncs for each winref */
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} WindowFuncLists;
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extern bool contain_agg_clause(Node *clause);
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extern bool contain_window_function(Node *clause);
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extern WindowFuncLists *find_window_functions(Node *clause, Index maxWinRef);
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extern double expression_returns_set_rows(PlannerInfo *root, Node *clause);
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extern bool contain_subplans(Node *clause);
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extern char max_parallel_hazard(Query *parse);
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extern bool is_parallel_safe(PlannerInfo *root, Node *node);
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extern bool contain_nonstrict_functions(Node *clause);
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extern bool contain_exec_param(Node *clause, List *param_ids);
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extern bool contain_leaked_vars(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(PlannerInfo *root, Node *clause);
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extern void CommuteOpExpr(OpExpr *clause);
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extern Query *inline_set_returning_function(PlannerInfo *root,
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RangeTblEntry *rte);
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extern Bitmapset *pull_paramids(Expr *expr);
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#endif /* CLAUSES_H */
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