SQRT (SSIS Expression)

Returns the square root of a numeric expression.

Syntax


SQRT(numeric_expression)  

Arguments

numeric_expression
Is a numeric expression of any numeric data type. For more information, see Integration Services Data Types.

Result Types

DT_R8

Remarks

SQRT returns a null result if the argument is null.

SQRT fails if the argument is a negative value.

The argument is cast to the DT_R8 data type before the square root operation.

Expression Examples

This example returns the square root of a numeric literal. The return result is 12.

SQRT(144)  

This example returns the square root of an expression, the result of subtracting values in the Value1 and Value2 columns.

SQRT(Value1 - Value2)  

This example returns the length of the third side of a right triangle by applying the SQUARE function to two variables and then calculating the square root of their sum. If Side1 contains 3 and Side2 contains 4, the SQRT function returns 5.

SQRT(SQUARE(@Side1) + SQUARE(@Side2))  
Note

In expressions, variable names always include the @ prefix.

See Also

Functions (SSIS Expression)