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-rw-r--r--src/include/optimizer/joininfo.h30
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diff --git a/src/include/optimizer/joininfo.h b/src/include/optimizer/joininfo.h
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+++ b/src/include/optimizer/joininfo.h
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+/*-------------------------------------------------------------------------
+ *
+ * joininfo.h
+ * prototypes for joininfo.c.
+ *
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/optimizer/joininfo.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef JOININFO_H
+#define JOININFO_H
+
+#include "nodes/pathnodes.h"
+
+
+extern bool have_relevant_joinclause(PlannerInfo *root,
+ RelOptInfo *rel1, RelOptInfo *rel2);
+
+extern void add_join_clause_to_rels(PlannerInfo *root,
+ RestrictInfo *restrictinfo,
+ Relids join_relids);
+extern void remove_join_clause_from_rels(PlannerInfo *root,
+ RestrictInfo *restrictinfo,
+ Relids join_relids);
+
+#endif /* JOININFO_H */