From 3bfd911ce2af3166efb7533a3a7fc33d577c70fd Mon Sep 17 00:00:00 2001
From: Denny Crane <denis.zhuravlov@gmail.com>
Date: Sat, 26 Mar 2022 16:11:45 -0300
Subject: [PATCH] test for crash _join_with_nullable_lowcardinality

---
 ...th_nullable_lowcardinality_crash.reference |  2 ++
 ...oin_with_nullable_lowcardinality_crash.sql | 20 +++++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 tests/queries/0_stateless/02245_join_with_nullable_lowcardinality_crash.reference
 create mode 100644 tests/queries/0_stateless/02245_join_with_nullable_lowcardinality_crash.sql

diff --git a/tests/queries/0_stateless/02245_join_with_nullable_lowcardinality_crash.reference b/tests/queries/0_stateless/02245_join_with_nullable_lowcardinality_crash.reference
new file mode 100644
index 00000000000..12c61d9c54e
--- /dev/null
+++ b/tests/queries/0_stateless/02245_join_with_nullable_lowcardinality_crash.reference
@@ -0,0 +1,2 @@
+usa
+
diff --git a/tests/queries/0_stateless/02245_join_with_nullable_lowcardinality_crash.sql b/tests/queries/0_stateless/02245_join_with_nullable_lowcardinality_crash.sql
new file mode 100644
index 00000000000..abc2ee41402
--- /dev/null
+++ b/tests/queries/0_stateless/02245_join_with_nullable_lowcardinality_crash.sql
@@ -0,0 +1,20 @@
+drop table if exists with_nullable;
+drop table if exists without_nullable;
+
+CREATE TABLE with_nullable
+( timestamp UInt32,
+  country LowCardinality(Nullable(String)) ) ENGINE = Memory;
+
+CREATE TABLE  without_nullable
+( timestamp UInt32,
+  country LowCardinality(String)) ENGINE = Memory;
+
+insert into with_nullable values(0,'f'),(0,'usa');
+insert into without_nullable values(0,'usa'),(0,'us2a');
+
+select if(t0.country is null ,t2.country,t0.country) "country" 
+from without_nullable t0 right outer join with_nullable t2 on t0.country=t2.country;
+
+drop table with_nullable;
+drop table without_nullable;
+