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  1. Preface
  2. The Transformation Language
  3. Constants
  4. Operators
  5. Variables
  6. Dates
  7. Functions

Transformation Language Reference

Transformation Language Reference

SQRT

SQRT

Returns the square root of a non-negative numeric value.

Syntax

SQRT(
numeric_value
)
The following table describes the argument for this command:
Argument
Required/
Optional
Description
numeric_value
Required
Positive numeric value. Passes the values for which you want to calculate a square root. You can enter any valid transformation expression.

Return Value

Double value.
NULL if a value passed to the function is NULL.

Example

The following expression returns the square root for the values in the Numbers port:
SQRT( NUMBERS )
NUMBERS 
RETURN VALUE
100
10
-100
Error.
Data Integration Service
does not write row.
NULL
NULL
60.54
7.78074546557076
The value -100 results in an error, since the function SQRT only evaluates positive numeric values. If you pass a negative value or character value, the
Data Integration Service
displays a Transformation Evaluation Error and does not write the row.
You can perform arithmetic on the values passed to SQRT before the function calculates the square root.

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