array_position
Description
Syntax:
BIGINT array_position(ARRAY<T> arr, T value)
This function returns a position/index that indicate the first occurrence of 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.Note:
It is only supported in vectorized engine.
Example
mysql> set enable_vectorized_engine=true;
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