| --- |
| { |
| "title": "MAP_VALUES", |
| "language": "en" |
| } |
| --- |
| |
| <!-- |
| 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. |
| --> |
| |
| ### Description |
| |
| #### Syntax |
| |
| `ARRAY<K> map_values(Map<K, V> map)` |
| |
| Extracts the value of a given `map` into an `ARRAY` of the corresponding type. |
| |
| ### Example |
| |
| ```sql |
| mysql> select map_values(map(1, "100", 0.1, 2)); |
| +---------------------------------------------------------------------------------------------------+ |
| | map_values(map(cast(1 as DECIMALV3(2, 1)), '100', cast(0.1 as DECIMALV3(2, 1)), cast(2 as TEXT))) | |
| +---------------------------------------------------------------------------------------------------+ |
| | ["100", "2"] | |
| +---------------------------------------------------------------------------------------------------+ |
| 1 row in set (0.12 sec) |
| |
| mysql> select map_values(map()); |
| +-------------------+ |
| | map_values(map()) | |
| +-------------------+ |
| | [] | |
| +-------------------+ |
| 1 row in set (0.11 sec) |
| ``` |
| |
| ### Keywords |
| |
| MAP, VALUES, MAP_VALUES |