update case

regression-test/data/query_p0/sql_functions/array_functions/array_flatten.out

@@ -0,0 +1,6 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !test --
+1	[1, 2, 3]	[1, 2, 3]	[1, 2, 3]	[1, 2, 3]	["a", "b", "c"]
+2	\N	\N	[]	\N	["b", null]
+3	[1, 2, null]	[null]	[null, 2]	[null, null, 3]	[null, "aaaab", "ccc"]
+

regression-test/suites/query_p0/sql_functions/array_functions/array_flatten.groovy

@@ -0,0 +1,46 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+suite("array_flatten") {
+    sql """DROP TABLE IF EXISTS t_array_flatten"""
+    sql """
+            CREATE TABLE IF NOT EXISTS t_array_flatten (
+              `k1` int(11) NULL COMMENT "",
+              `a1` array<tinyint(4)> NULL COMMENT "",
+              `aaa1` array<array<array<tinyint(4)>>> NULL COMMENT "",
+              `aa3` array<array<int(11)>> NOT NULL COMMENT "",
+              `aa5` array<array<largeint(40)>> NULL COMMENT "",
+              `aa14` array<array<string>> NULL COMMENT ""
+
+            ) ENGINE=OLAP
+            DUPLICATE KEY(`k1`)
+            DISTRIBUTED BY HASH(`k1`) BUCKETS 1
+            PROPERTIES (
+            "replication_allocation" = "tag.location.default: 1",
+            "storage_format" = "V2"
+            )
+        """
+    sql """ INSERT INTO t_array_flatten VALUES(1, [1, 2, 3],[[[1]],[[2],[3]]],[[1,2],[3]],[[1,2],[3]],[['a'],['b','c']]) """
+    sql """ INSERT INTO t_array_flatten VALUES(2, null,null,[],null,[null,['b',null]]) """
+    sql """ INSERT INTO t_array_flatten VALUES(3, [1, 2, null],[[[]],[[null],[]]],[[null,2],[]],[[null,null],[3]],[[null],['aaaab','ccc']]) """
+
+
+
+    qt_test """
+    select k1, array_flatten(a1), array_flatten(aaa1), array_flatten(aa3), array_flatten(aa5), array_flatten(aa14) from t_array_flatten order by k1;
+    """
+}