1 files changed, 32 insertions, 0 deletions
diff --git a/src/include/optimizer/placeholder.h b/src/include/optimizer/placeholder.h
new file mode 100644
index 0000000..69ef5ae
--- /dev/null
+++ b/src/include/optimizer/placeholder.h
@@ -0,0 +1,32 @@
+/*-------------------------------------------------------------------------
+ *
+ * placeholder.h
+ *	  prototypes for optimizer/util/placeholder.c.
+ *
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/optimizer/placeholder.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PLACEHOLDER_H
+#define PLACEHOLDER_H
+
+#include "nodes/pathnodes.h"
+
+
+extern PlaceHolderVar *make_placeholder_expr(PlannerInfo *root, Expr *expr,
+											 Relids phrels);
+extern PlaceHolderInfo *find_placeholder_info(PlannerInfo *root,
+											  PlaceHolderVar *phv, bool create_new_ph);
+extern void find_placeholders_in_jointree(PlannerInfo *root);
+extern void update_placeholder_eval_levels(PlannerInfo *root,
+										   SpecialJoinInfo *new_sjinfo);
+extern void fix_placeholder_input_needed_levels(PlannerInfo *root);
+extern void add_placeholders_to_base_rels(PlannerInfo *root);
+extern void add_placeholders_to_joinrel(PlannerInfo *root, RelOptInfo *joinrel,
+										RelOptInfo *outer_rel, RelOptInfo *inner_rel);
+
+#endif							/* PLACEHOLDER_H */