Transformation Guide

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Creating an Expression Transformation

Use the following procedure to create an Expression transformation:

In the Mapping Designer, open a mapping.

Click Transformation > Create. Select Expression transformation.

Enter a name and click Done.

Select and drag the ports from the source qualifier or other transformations to add to the Expression transformation.

You can also open the transformation and create ports manually.

Double-click on the title bar and click on Ports tab. You can create output and variable ports within the transformation.

Assign the port datatype, precision, and scale to match the expression return value.

In the Expression section of an output or variable port, open the Expression Editor.

Enter an expression.

Click Validate to verify the expression syntax.

To reflect the latest changes from the expression condition in the test expression section in the right pane, click Refresh.

In the right pane, enter sample values for the input ports used within the expression.

To evaluate the expression, click Evaluate.

Click OK.

Create reusable transformations on the Transformation tab.

After you make the transformation reusable, you cannot copy ports from the source qualifier or other transformations. You can
create ports manually within the transformation.

Configure the tracing level on the Properties tab.

Add metadata extensions on the Metadata Extensions tab.

Click OK.

Connect the output ports to a downstream transformation or target.

Expression Transformation

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Table of Contents

Transformation Guide

Transformation Guide

Creating an Expression Transformation

Creating an Expression Transformation