array_contains

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。

example

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