From f6dff13db8545967475f52416d01946d0d660269 Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@yandex-team.ru>
Date: Tue, 5 Jan 2021 03:56:56 +0300
Subject: [PATCH] Add a test for #14974

---
 .../01636_nullable_fuzz2.reference            |  6 ++++
 .../0_stateless/01636_nullable_fuzz2.sql      | 35 +++++++++++++++++++
 2 files changed, 41 insertions(+)
 create mode 100644 tests/queries/0_stateless/01636_nullable_fuzz2.reference
 create mode 100644 tests/queries/0_stateless/01636_nullable_fuzz2.sql

diff --git a/tests/queries/0_stateless/01636_nullable_fuzz2.reference b/tests/queries/0_stateless/01636_nullable_fuzz2.reference
new file mode 100644
index 00000000000..b26b82b1cb9
--- /dev/null
+++ b/tests/queries/0_stateless/01636_nullable_fuzz2.reference
@@ -0,0 +1,6 @@
+2020-07-09
+2020-07-10
+2020-07-11
+2020-07-12
+
+1970-01-01
diff --git a/tests/queries/0_stateless/01636_nullable_fuzz2.sql b/tests/queries/0_stateless/01636_nullable_fuzz2.sql
new file mode 100644
index 00000000000..a40da51c38c
--- /dev/null
+++ b/tests/queries/0_stateless/01636_nullable_fuzz2.sql
@@ -0,0 +1,35 @@
+DROP TABLE IF EXISTS open_events_tmp;
+DROP TABLE IF EXISTS tracking_events_tmp;
+
+CREATE TABLE open_events_tmp (`APIKey` UInt32, `EventDate` Date) ENGINE = MergeTree PARTITION BY toMonday(EventDate) ORDER BY (APIKey, EventDate);
+CREATE TABLE tracking_events_tmp (`APIKey` UInt32, `EventDate` Date) ENGINE = MergeTree PARTITION BY toYYYYMM(EventDate) ORDER BY (APIKey, EventDate);
+
+insert into open_events_tmp select 2, '2020-07-10' from numbers(32);
+insert into open_events_tmp select 2, '2020-07-11' from numbers(31);
+insert into open_events_tmp select 2, '2020-07-12' from numbers(30);
+
+insert into tracking_events_tmp select 2, '2020-07-09' from numbers(1555);
+insert into tracking_events_tmp select 2, '2020-07-10' from numbers(1881);
+insert into tracking_events_tmp select 2, '2020-07-11' from numbers(1623);
+
+SELECT EventDate
+FROM 
+(
+    SELECT EventDate
+    FROM tracking_events_tmp AS t1
+    WHERE (EventDate >= toDate('2020-07-09')) AND (EventDate <= toDate('2020-07-11')) AND (APIKey = 2)
+    GROUP BY EventDate
+)
+FULL OUTER JOIN 
+(
+    SELECT EventDate
+    FROM remote('127.0.0.{1,3}', currentDatabase(), open_events_tmp) AS t2
+    WHERE (EventDate <= toDate('2020-07-12')) AND (APIKey = 2)
+    GROUP BY EventDate
+        WITH TOTALS
+) USING (EventDate)
+ORDER BY EventDate ASC
+SETTINGS totals_mode = 'after_having_auto', group_by_overflow_mode = 'any', max_rows_to_group_by = 10000000, joined_subquery_requires_alias = 0;
+
+DROP TABLE open_events_tmp;
+DROP TABLE tracking_events_tmp;