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-- 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.


statement
CREATE TABLE test_array_compact(arr array<int>) USING parquet

statement
INSERT INTO test_array_compact VALUES (array(1, NULL, 2, NULL, 3)), (array()), (NULL), (array(NULL, NULL)), (array(1, 2, 3))

-- column argument
query
SELECT array_compact(arr) FROM test_array_compact

-- literal arguments
query
SELECT array_compact(array(1, NULL, 2, NULL, 3))

-- string element type
statement
CREATE TABLE test_array_compact_str(arr array<string>) USING parquet

statement
INSERT INTO test_array_compact_str VALUES (array('a', NULL, 'b', NULL, 'c')), (array()), (NULL), (array(NULL, NULL)), (array('', NULL, '', NULL))

query
SELECT array_compact(arr) FROM test_array_compact_str

-- double element type
query
SELECT array_compact(array(1.0, NULL, 2.0, NULL, 3.0))

-- nested array type (removes null arrays from outer, preserves null elements in inner)
query
SELECT array_compact(array(array(1, NULL, 3), NULL, array(NULL, 2, 3)))
