From 5fc28edb16c4f936c57d241cf3307a5b40083d3b Mon Sep 17 00:00:00 2001
From: Artem Zuikov <chertus@gmail.com>
Date: Wed, 29 Apr 2020 14:37:30 +0300
Subject: [PATCH] test fo fixed issue #7798

---
 ...129_dict_get_join_lose_constness.reference |  1 +
 .../01129_dict_get_join_lose_constness.sql    | 21 +++++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 tests/queries/0_stateless/01129_dict_get_join_lose_constness.reference
 create mode 100644 tests/queries/0_stateless/01129_dict_get_join_lose_constness.sql

diff --git a/tests/queries/0_stateless/01129_dict_get_join_lose_constness.reference b/tests/queries/0_stateless/01129_dict_get_join_lose_constness.reference
new file mode 100644
index 00000000000..f7263967932
--- /dev/null
+++ b/tests/queries/0_stateless/01129_dict_get_join_lose_constness.reference
@@ -0,0 +1 @@
+0	0000-00-00 00:00:00
diff --git a/tests/queries/0_stateless/01129_dict_get_join_lose_constness.sql b/tests/queries/0_stateless/01129_dict_get_join_lose_constness.sql
new file mode 100644
index 00000000000..0f8f5cb2a06
--- /dev/null
+++ b/tests/queries/0_stateless/01129_dict_get_join_lose_constness.sql
@@ -0,0 +1,21 @@
+DROP DICTIONARY IF EXISTS system.dict1;
+
+CREATE DICTIONARY IF NOT EXISTS system.dict1
+(
+    bytes_allocated UInt64,
+    element_count Int32,
+    loading_start_time DateTime
+)
+PRIMARY KEY bytes_allocated
+SOURCE(CLICKHOUSE(HOST 'localhost' PORT 9000 USER 'default' PASSWORD '' TABLE 'dictionaries' DB 'system'))
+LIFETIME(0)
+LAYOUT(hashed());
+
+SELECT dictGetInt32('system.dict1', 'element_count', toUInt64(dict_key)) AS join_key,
+       dictGetDateTime('system.dict1', 'loading_start_time', toUInt64(dict_key)) AS datetime
+FROM (select 1 AS dict_key) js1
+LEFT JOIN (SELECT toInt32(2) AS join_key) js2
+USING (join_key)
+WHERE now() >= datetime;
+
+DROP DICTIONARY IF EXISTS system.dict1;