From e5a33e63327f8c7c23e039cfe7fdbd2df9533c0e Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@yandex-team.ru>
Date: Sat, 23 Dec 2017 05:52:13 +0300
Subject: [PATCH] Added test for the case when Nullable condition is optimized
 to PREWHERE #1626

---
 .../00543_null_and_prewhere.reference           |  1 +
 .../0_stateless/00543_null_and_prewhere.sql     | 17 +++++++++++++++++
 2 files changed, 18 insertions(+)
 create mode 100644 dbms/tests/queries/0_stateless/00543_null_and_prewhere.reference
 create mode 100644 dbms/tests/queries/0_stateless/00543_null_and_prewhere.sql

diff --git a/dbms/tests/queries/0_stateless/00543_null_and_prewhere.reference b/dbms/tests/queries/0_stateless/00543_null_and_prewhere.reference
new file mode 100644
index 00000000000..d00491fd7e5
--- /dev/null
+++ b/dbms/tests/queries/0_stateless/00543_null_and_prewhere.reference
@@ -0,0 +1 @@
+1
diff --git a/dbms/tests/queries/0_stateless/00543_null_and_prewhere.sql b/dbms/tests/queries/0_stateless/00543_null_and_prewhere.sql
new file mode 100644
index 00000000000..063280085c3
--- /dev/null
+++ b/dbms/tests/queries/0_stateless/00543_null_and_prewhere.sql
@@ -0,0 +1,17 @@
+CREATE TABLE test.test
+(
+    dt Date,
+    id UInt32,
+    val Nullable(UInt32)
+)
+ENGINE = MergeTree(dt, id, 8192);
+
+insert into test.test (dt, id, val) values ('2017-01-01', 1, 10);
+insert into test.test (dt, id, val) values ('2017-01-01', 1, null);
+insert into test.test (dt, id, val) values ('2017-01-01', 1, 0);
+
+SELECT count()
+FROM test.test
+WHERE val = 0;
+
+DROP TABLE IF EXISTS test.test;