COUNT#
Returns the number of items in a group. COUNT works like the COUNT_BIG function. The only difference between the two functions is their return values. COUNT always returns an int data type value. COUNT_BIG always returns a bigint data type value.
Syntax#
COUNT ( { [ [ ALL | DISTINCT ] expression ] | * } )
[ OVER (
[ partition_by_clause ]
[ order_by_clause ]
[ ROW_or_RANGE_clause ]
) ]
Arguments#
expression
Is an expression of any type except text, image, or ntext. Aggregate functions and subqueries are not permitted.
Return types#
int
Example#
SELECT COUNT([FloatValue]) OVER (PARTITION BY [IdNullable] ORDER BY [IntValue]) AS [CountOver]
FROM [BasicDataTable]