7ba4cd764a
in the previous, the result is: ``` mysql> select array_position([1, null], null); +--------------------------------------+ | array_position(ARRAY(1, NULL), NULL) | +--------------------------------------+ | NULL | +--------------------------------------+ 1 row in set (0.02 sec) ``` but after this commit, the result become: ``` mysql> select array_position([1, null], null); +--------------------------------------+ | array_position(ARRAY(1, NULL), NULL) | +--------------------------------------+ | 2 | +--------------------------------------+ 1 row in set (0.02 sec) ```
2.0 KiB
2.0 KiB
title, language
| title | language |
|---|---|
| array_contains | zh-CN |
array_contains
description
Syntax
BOOLEAN array_contains(ARRAY<T> arr, T value)
判断数组中是否包含value。返回结果如下：
1 - value在数组arr中存在；
0 - value不存在数组arr中；
NULL - arr为NULL时。
notice
仅支持向量化引擎中使用
example
mysql> set enable_vectorized_engine=true;
mysql> SELECT id,c_array,array_contains(c_array, 5) FROM `array_test`;
+------+-----------------+------------------------------+
| id | c_array | array_contains(`c_array`, 5) |
+------+-----------------+------------------------------+
| 1 | [1, 2, 3, 4, 5] | 1 |
| 2 | [6, 7, 8] | 0 |
| 3 | [] | 0 |
| 4 | NULL | NULL |
+------+-----------------+------------------------------+
mysql> select array_contains([null, 1], null);
+--------------------------------------+
| array_contains(ARRAY(NULL, 1), NULL) |
+--------------------------------------+
| 1 |
+--------------------------------------+
1 row in set (0.00 sec)
keywords
ARRAY,CONTAIN,CONTAINS,ARRAY_CONTAINS