STDEVP
Returns the statistical standard deviation for the population for all values in the specified expression.
Syntax
STDEVP ( [ ALL | DISTINCT ] expression ) OVER ( [ partition_by_clause ] order_by_clause )
Arguments
expression
Is a numeric expression. Aggregate functions and subqueries are not permitted. expression is an expression of the exact numeric or approximate numeric data type category, except for the bit data type.
Return types
float
Example
SELECT STDEVP([IntNotNullColumn]) AS [StdevP] FROM [IntTable]