| --- |
| { |
| "title": "ARRAY_POSITION", |
| "language": "en" |
| } |
| --- |
| |
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| |
| ## array_position |
| |
| array_position |
| |
| ### description |
| |
| #### Syntax |
| |
| `BIGINT array_position(ARRAY<T> arr, T value)` |
| |
| Returns a position/index of first occurrence of the `value` in the given array. |
| |
| ``` |
| position - value position in array (starts with 1); |
| 0 - if value does not present in the array; |
| NULL - when array is NULL. |
| ``` |
| |
| ### example |
| |
| ``` |
| mysql> SELECT id,c_array,array_position(c_array, 5) FROM `array_test`; |
| +------+-----------------+------------------------------+ |
| | id | c_array | array_position(`c_array`, 5) | |
| +------+-----------------+------------------------------+ |
| | 1 | [1, 2, 3, 4, 5] | 5 | |
| | 2 | [6, 7, 8] | 0 | |
| | 3 | [] | 0 | |
| | 4 | NULL | NULL | |
| +------+-----------------+------------------------------+ |
| |
| mysql> select array_position([1, null], null); |
| +--------------------------------------+ |
| | array_position(ARRAY(1, NULL), NULL) | |
| +--------------------------------------+ |
| | 2 | |
| +--------------------------------------+ |
| 1 row in set (0.01 sec) |
| ``` |
| |
| ### keywords |
| |
| ARRAY,POSITION,ARRAY_POSITION |
| |
