Returns the square of the specified float value.
Transact-SQL Syntax Conventions
SQUARE ( float_expression )
Is an expression of type float or of a type that can be implicitly converted to float.
float
The following example returns the volume of a cylinder having a radius of 1 inch and a height of 5 inches.
DECLARE @h float, @r float SET @h = 5 SET @r = 1 SELECT PI()* SQUARE(@r)* @h AS 'Cyl Vol'
Here is the result set.
Cyl Vol -------------------------- 15.707963267948966