countequal

countequal

Description

Syntax:

BIGINT countequal(ARRAY<T> arr, T value)

This function returns the number of values in the array. It returns one of the following results:

num      - the number of values in the array;
0        - there are no values in the array;
NULL     - the array is NULL or the value is NULL.

Note:

It is only supported in vectorized engine.

Example

mysql> set enable_vectorized_engine=true;

mysql> select *, countEqual(c_array,5) from array_test;
+------+-----------------+--------------------------+
| id   | c_array         | countequal(`c_array`, 5) |
+------+-----------------+--------------------------+
|    1 | [1, 2, 3, 4, 5] |                        1 |
|    2 | [6, 7, 8]       |                        0 |
|    3 | []              |                        0 |
|    4 | NULL            |                     NULL |
+------+-----------------+--------------------------+

Keywords

ARRAY,COUNTEQUAL