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Creating Custom Functions
Custom Function API Reference

Transformation Language Reference

10.5.6
- 10.5.1
- 10.5
- 10.4.0

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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. PowerCenter 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

PowerCenter 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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Table of Contents

Transformation Language Reference

Transformation Language Reference

SQRT

SQRT

Syntax

Return Value

Example