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-rw-r--r--src/test/regress/expected/select_parallel.out19
-rw-r--r--src/test/regress/sql/select_parallel.sql5
2 files changed, 24 insertions, 0 deletions
diff --git a/src/test/regress/expected/select_parallel.out b/src/test/regress/expected/select_parallel.out
index 13cdd3d5cca..26409d39aaa 100644
--- a/src/test/regress/expected/select_parallel.out
+++ b/src/test/regress/expected/select_parallel.out
@@ -984,6 +984,25 @@ explain (costs off, verbose)
Output: b.unique1
(18 rows)
+-- LIMIT/OFFSET within sub-selects can't be pushed to workers.
+explain (costs off)
+ select * from tenk1 a where two in
+ (select two from tenk1 b where stringu1 like '%AAAA' limit 3);
+ QUERY PLAN
+---------------------------------------------------------------
+ Hash Semi Join
+ Hash Cond: (a.two = b.two)
+ -> Gather
+ Workers Planned: 4
+ -> Parallel Seq Scan on tenk1 a
+ -> Hash
+ -> Limit
+ -> Gather
+ Workers Planned: 4
+ -> Parallel Seq Scan on tenk1 b
+ Filter: (stringu1 ~~ '%AAAA'::text)
+(11 rows)
+
-- to increase the parallel query test coverage
SAVEPOINT settings;
SET LOCAL force_parallel_mode = 1;
diff --git a/src/test/regress/sql/select_parallel.sql b/src/test/regress/sql/select_parallel.sql
index 3d1dffe61d2..938c708d18f 100644
--- a/src/test/regress/sql/select_parallel.sql
+++ b/src/test/regress/sql/select_parallel.sql
@@ -368,6 +368,11 @@ explain (costs off, verbose)
(select unique1, row_number() over() from tenk1 b);
+-- LIMIT/OFFSET within sub-selects can't be pushed to workers.
+explain (costs off)
+ select * from tenk1 a where two in
+ (select two from tenk1 b where stringu1 like '%AAAA' limit 3);
+
-- to increase the parallel query test coverage
SAVEPOINT settings;
SET LOCAL force_parallel_mode = 1;