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-rw-r--r--src/include/optimizer/clauses.h58
1 files changed, 58 insertions, 0 deletions
diff --git a/src/include/optimizer/clauses.h b/src/include/optimizer/clauses.h
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+/*-------------------------------------------------------------------------
+ *
+ * clauses.h
+ * prototypes for clauses.c.
+ *
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/optimizer/clauses.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef CLAUSES_H
+#define CLAUSES_H
+
+#include "nodes/pathnodes.h"
+
+typedef struct
+{
+ int numWindowFuncs; /* total number of WindowFuncs found */
+ Index maxWinRef; /* windowFuncs[] is indexed 0 .. maxWinRef */
+ List **windowFuncs; /* lists of WindowFuncs for each winref */
+} WindowFuncLists;
+
+extern bool contain_agg_clause(Node *clause);
+
+extern bool contain_window_function(Node *clause);
+extern WindowFuncLists *find_window_functions(Node *clause, Index maxWinRef);
+
+extern double expression_returns_set_rows(PlannerInfo *root, Node *clause);
+
+extern bool contain_subplans(Node *clause);
+
+extern char max_parallel_hazard(Query *parse);
+extern bool is_parallel_safe(PlannerInfo *root, Node *node);
+extern bool contain_nonstrict_functions(Node *clause);
+extern bool contain_exec_param(Node *clause, List *param_ids);
+extern bool contain_leaked_vars(Node *clause);
+
+extern Relids find_nonnullable_rels(Node *clause);
+extern List *find_nonnullable_vars(Node *clause);
+extern List *find_forced_null_vars(Node *clause);
+extern Var *find_forced_null_var(Node *clause);
+
+extern bool is_pseudo_constant_clause(Node *clause);
+extern bool is_pseudo_constant_clause_relids(Node *clause, Relids relids);
+
+extern int NumRelids(PlannerInfo *root, Node *clause);
+
+extern void CommuteOpExpr(OpExpr *clause);
+
+extern Query *inline_set_returning_function(PlannerInfo *root,
+ RangeTblEntry *rte);
+
+extern Bitmapset *pull_paramids(Expr *expr);
+
+#endif /* CLAUSES_H */