array_concat

SinceVersion 2.0.0

array_concat

description

Concat all arrays passed in the arguments

Syntax

Array<T> array_concat(Array<T>, ...)

Returned value

The concated array.

Type: Array.

notice

Only supported in vectorized engine

example

1. mysql> select array_concat([1, 2], [7, 8], [5, 6]);
2. +-----------------------------------------------------+
3. | array_concat(ARRAY(1, 2), ARRAY(7, 8), ARRAY(5, 6)) |
4. +-----------------------------------------------------+
5. | [1, 2, 7, 8, 5, 6]                                  |
6. +-----------------------------------------------------+
7. 1 row in set (0.02 sec)

9. mysql> select col2, col3, array_concat(col2, col3) from array_test;
10. +--------------+-----------+------------------------------+
11. | col2         | col3      | array_concat(`col2`, `col3`) |
12. +--------------+-----------+------------------------------+
13. | [1, 2, 3]    | [3, 4, 5] | [1, 2, 3, 3, 4, 5]           |
14. | [1, NULL, 2] | [NULL]    | [1, NULL, 2, NULL]           |
15. | [1, 2, 3]    | NULL      | NULL                         |
16. | []           | []        | []                           |
17. +--------------+-----------+------------------------------+

keywords

ARRAY,CONCAT,ARRAY_CONCAT