1 files changed, 11 insertions, 0 deletions
diff --git a/src/backend/access/nbtree/nbtree.c b/src/backend/access/nbtree/nbtree.c
index f3a1d256a05..13c05525179 100644
--- a/src/backend/access/nbtree/nbtree.c
+++ b/src/backend/access/nbtree/nbtree.c
@@ -1091,3 +1091,14 @@ restart:
 		goto restart;
 	}
 }
+
+/*
+ *	btcanreturn() -- Check whether btree indexes support index-only scans.
+ *
+ * btrees always do, so this is trivial.
+ */
+Datum
+btcanreturn(PG_FUNCTION_ARGS)
+{
+	PG_RETURN_BOOL(true);
+}