1 files changed, 54 insertions, 0 deletions
diff --git a/src/backend/optimizer/clauses.h b/src/backend/optimizer/clauses.h
new file mode 100644
index 00000000000..2289223b3e8
--- /dev/null
+++ b/src/backend/optimizer/clauses.h
@@ -0,0 +1,54 @@
+/*-------------------------------------------------------------------------
+ *
+ * clauses.h--
+ *    prototypes for clauses.c.
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: clauses.h,v 1.1.1.1 1996/07/09 06:21:34 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef CLAUSES_H
+#define CLAUSES_H
+
+#include "nodes/pg_list.h"
+#include "nodes/primnodes.h"
+
+extern Expr *make_clause(int type, Node *oper, List *args);
+extern bool is_opclause(Node *clause);
+extern Expr *make_opclause(Oper *op, Var *leftop, Var *rightop);
+extern Var *get_leftop(Expr *clause);
+extern Var *get_rightop(Expr *clause);
+
+extern bool agg_clause(Node *clause);
+
+extern bool is_funcclause(Node *clause);
+extern Expr *make_funcclause(Func *func, List *funcargs);
+
+extern bool or_clause(Node *clause);
+extern Expr *make_orclause(List *orclauses);
+
+extern bool not_clause(Node *clause);
+extern Expr *make_notclause(Expr *notclause);
+extern Expr *get_notclausearg(Expr *notclause);
+
+extern bool and_clause(Node *clause);
+extern Expr *make_andclause(List *andclauses);
+
+extern List *pull_constant_clauses(List *quals, List **constantQual);
+extern void clause_relids_vars(Node *clause, List **relids, List **vars);
+extern int NumRelids(Node *clause);
+extern bool contains_not(Node *clause);
+extern bool join_clause_p(Node *clause);
+extern bool qual_clause_p(Node *clause);
+extern void fix_opid(Node *clause);
+extern List *fix_opids(List *clauses);
+extern void get_relattval(Node *clause, int *relid,
+	AttrNumber *attno, Datum *constval, int *flag);
+extern void get_rels_atts(Node *clause, int *relid1,
+	AttrNumber *attno1, int *relid2, AttrNumber *attno2);
+extern void CommuteClause(Node *clause);
+
+#endif	/* CLAUSES_H */