COUNT_ITEM
Written by
Updated at June 27, 2023
Syntax
COUNT_ITEM( array, value )
Description
Returns the number of elements in the array array
equal to value
. The type of value
must match the type of the array
elements.
Argument types:
array
—Array of fractional numbers | Array of integers | Array of strings
value
—Fractional number | Integer | String
Return type: Integer
Examples
COUNT_ITEM(ARRAY(1, 2, 2, 3), 2) = 2
COUNT_ITEM(ARRAY(1, 2, 2, 3), 4) = 0
COUNT_ITEM(ARRAY(1, NULL, 2, NULL), NULL) = 2
Data source support
ClickHouse 21.8
, PostgreSQL 9.3
.