countequal

SinceVersion 1.2.0

countequal

description

Syntax

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

Returns a number of the value in the given array.

1. num      - how many the value number in array;
2. 0        - if value does not present in the array;
3. NULL     - when array is NULL or value is NULL.

notice

Only supported in vectorized engine

example

1. mysql> set enable_vectorized_engine=true;

3. mysql> select *, countEqual(c_array,5) from array_test;
4. +------+-----------------+--------------------------+
5. | id   | c_array         | countequal(`c_array`, 5) |
6. +------+-----------------+--------------------------+
7. |    1 | [1, 2, 3, 4, 5] |                        1 |
8. |    2 | [6, 7, 8]       |                        0 |
9. |    3 | []              |                        0 |
10. |    4 | NULL            |                     NULL |
11. +------+-----------------+--------------------------+

keywords

ARRAY,COUNTEQUAL,