From 75f1d7b8200eb936af4a68171eb6ee9ac394b9ee Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@yandex-team.ru>
Date: Thu, 9 Mar 2017 23:40:36 +0300
Subject: [PATCH] Added test [#CLICKHOUSE-2789].

---
 .../0_stateless/00435_coalesce.reference      | 46 +++++++++++++++++++
 .../queries/0_stateless/00435_coalesce.sql    |  6 +++
 2 files changed, 52 insertions(+)
 create mode 100644 dbms/tests/queries/0_stateless/00435_coalesce.reference
 create mode 100644 dbms/tests/queries/0_stateless/00435_coalesce.sql

diff --git a/dbms/tests/queries/0_stateless/00435_coalesce.reference b/dbms/tests/queries/0_stateless/00435_coalesce.reference
new file mode 100644
index 00000000000..20b8288b09c
--- /dev/null
+++ b/dbms/tests/queries/0_stateless/00435_coalesce.reference
@@ -0,0 +1,46 @@
+\N	\N	\N	1	1	1	1
+0	Nullable(UInt64)
+\N	Nullable(UInt64)
+2	Nullable(UInt64)
+3	Nullable(UInt64)
+4	Nullable(UInt64)
+5	Nullable(UInt64)
+6	Nullable(UInt64)
+\N	Nullable(UInt64)
+8	Nullable(UInt64)
+9	Nullable(UInt64)
+10	Nullable(UInt64)
+\N	Nullable(UInt64)
+12	Nullable(UInt64)
+\N	Nullable(UInt64)
+14	Nullable(UInt64)
+0	UInt64
+1	UInt64
+2	UInt64
+3	UInt64
+4	UInt64
+5	UInt64
+6	UInt64
+7	UInt64
+8	UInt64
+9	UInt64
+10	UInt64
+11	UInt64
+12	UInt64
+13	UInt64
+14	UInt64
+0	UInt64
+100	UInt64
+2	UInt64
+3	UInt64
+4	UInt64
+100	UInt64
+6	UInt64
+100	UInt64
+8	UInt64
+9	UInt64
+10	UInt64
+100	UInt64
+12	UInt64
+100	UInt64
+14	UInt64
diff --git a/dbms/tests/queries/0_stateless/00435_coalesce.sql b/dbms/tests/queries/0_stateless/00435_coalesce.sql
new file mode 100644
index 00000000000..7c1c519bcb2
--- /dev/null
+++ b/dbms/tests/queries/0_stateless/00435_coalesce.sql
@@ -0,0 +1,6 @@
+SELECT coalesce(), coalesce(NULL), coalesce(NULL, NULL),
+    coalesce(1), coalesce(1, NULL), coalesce(NULL, 1), coalesce(NULL, 1, NULL);
+
+SELECT coalesce(number % 2 = 0 ? number : NULL, number % 3 = 0 ? number : NULL, number % 5 = 0 ? number : NULL) AS res, toTypeName(res) FROM system.numbers LIMIT 15;
+SELECT coalesce(number % 2 = 0 ? number : NULL, number % 3 = 0 ? number : NULL, number) AS res, toTypeName(res) FROM system.numbers LIMIT 15;
+SELECT coalesce(number % 2 = 0 ? number : NULL, number % 3 = 0 ? number : NULL, 100) AS res, toTypeName(res) FROM system.numbers LIMIT 15;