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array_position

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.

notice​

Only supported in vectorized engine

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