countequal
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.
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 | +------+-----------------+--------------------------+ mysql> select *,countEqual(c_array, 1),countEqual(c_array, 5),countEqual(c_array, NULL) from array_test; +------+-----------------------+--------------------------+--------------------------+-----------------------------+ | id | c_array | countequal(`c_array`, 1) | countequal(`c_array`, 5) | countequal(`c_array`, NULL) | +------+-----------------------+--------------------------+--------------------------+-----------------------------+ | 1 | [1, 2, 3, 4, 5] | 1 | 1 | 0 | | 2 | [6, 7, 8] | 0 | 0 | 0 | | 3 | [] | 0 | 0 | 0 | | 4 | NULL | NULL | NULL | NULL | | 5 | [66, 77] | 0 | 0 | 0 | | 5 | [66, 77] | 0 | 0 | 0 | | 6 | NULL | NULL | NULL | NULL | | 7 | [NULL, NULL, NULL] | 0 | 0 | 3 | | 8 | [1, 2, 3, 4, 5, 5, 5] | 1 | 3 | 0 | +------+-----------------------+--------------------------+--------------------------+-----------------------------+
ARRAY,COUNTEQUAL,