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.

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

notice

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,