From fc6140ade825c1e953a89efb9ab373deade2b934 Mon Sep 17 00:00:00 2001
From: hcz <h.cz@qq.com>
Date: Fri, 28 Jun 2019 11:55:22 +0800
Subject: [PATCH] Add tests

---
 dbms/tests/queries/0_stateless/00897_flatten.reference | 3 +++
 dbms/tests/queries/0_stateless/00897_flatten.sql       | 5 ++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/dbms/tests/queries/0_stateless/00897_flatten.reference b/dbms/tests/queries/0_stateless/00897_flatten.reference
index 36b61d51056..6c1aa724070 100644
--- a/dbms/tests/queries/0_stateless/00897_flatten.reference
+++ b/dbms/tests/queries/0_stateless/00897_flatten.reference
@@ -8,3 +8,6 @@
 [0,0,1,0,1,0,1,0,1]
 [0,0,1,0,1,0,1,0,1,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2]
 [0,0,1,0,1,0,1,0,1,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3,0,1,2,3]
+[1,2,3,4,5,6,7,8]
+[]
+[]
diff --git a/dbms/tests/queries/0_stateless/00897_flatten.sql b/dbms/tests/queries/0_stateless/00897_flatten.sql
index 344db389bac..fae7ae55f31 100644
--- a/dbms/tests/queries/0_stateless/00897_flatten.sql
+++ b/dbms/tests/queries/0_stateless/00897_flatten.sql
@@ -1,3 +1,6 @@
 SELECT flatten(arrayJoin([[[1, 2, 3], [4, 5]], [[6], [7, 8]]]));
-SELECT flatten(arrayJoin([[[[]], [[1], [], [2, 3]]], [[[4]]]]));
+SELECT arrayFlatten(arrayJoin([[[[]], [[1], [], [2, 3]]], [[[4]]]]));
 SELECT flatten(arrayMap(x -> arrayMap(x -> arrayMap(x -> range(x), range(x)), range(x)), range(number))) FROM numbers(6);
+SELECT arrayFlatten(arrayJoin([[[1, 2, 3], [4, 5]], [[6], [7, 8]]]));
+SELECT flatten([[[]]]);
+SELECT arrayFlatten([]);