diff --git a/src/test/regress/sql/create_index.sql b/src/test/regress/sql/create_index.sql
index 8b353be16e..0b60caabe4 100644
--- a/src/test/regress/sql/create_index.sql
+++ b/src/test/regress/sql/create_index.sql
@@ -255,6 +255,10 @@ EXPLAIN (COSTS OFF)
 SELECT circle_center(f1), round(radius(f1)) as radius FROM gcircle_tbl ORDER BY f1 <-> '(200,300)'::point LIMIT 10;
 SELECT circle_center(f1), round(radius(f1)) as radius FROM gcircle_tbl ORDER BY f1 <-> '(200,300)'::point LIMIT 10;
 
+EXPLAIN (COSTS OFF)
+SELECT point(x,x), (SELECT circle_center(f1) FROM gcircle_tbl ORDER BY f1 <-> point(x,x) LIMIT 1) as c FROM generate_series(0,1000,1) x;
+SELECT point(x,x), (SELECT circle_center(f1) FROM gcircle_tbl ORDER BY f1 <-> point(x,x) LIMIT 1) as c FROM generate_series(0,1000,1) x;
+
 -- Now check the results from bitmap indexscan
 SET enable_seqscan = OFF;
 SET enable_indexscan = OFF;