Table of Contents

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  1. Preface
  2. Working with Transformations
  3. Aggregator Transformation
  4. Custom Transformation
  5. Custom Transformation Functions
  6. Data Masking Transformation
  7. Data Masking Examples
  8. Expression Transformation
  9. External Procedure Transformation
  10. Filter Transformation
  11. HTTP Transformation
  12. Identity Resolution Transformation
  13. Java Transformation
  14. Java Transformation API Reference
  15. Java Expressions
  16. Java Transformation Example
  17. Joiner Transformation
  18. Lookup Transformation
  19. Lookup Caches
  20. Dynamic Lookup Cache
  21. Normalizer Transformation
  22. Rank Transformation
  23. Router Transformation
  24. Sequence Generator Transformation
  25. Sorter Transformation
  26. Source Qualifier Transformation
  27. SQL Transformation
  28. Using the SQL Transformation in a Mapping
  29. Stored Procedure Transformation
  30. Transaction Control Transformation
  31. Union Transformation
  32. Unstructured Data Transformation
  33. Update Strategy Transformation
  34. XML Transformations

Transformation Guide

Transformation Guide

Using the Expression Editor

Using the Expression Editor

Use the Expression Editor to build SQL-like statements. Although you can enter an expression manually, use the point-and-click method. Select functions, ports, variables, and operators from the point-and-click interface to minimize errors when you build expressions. The maximum number of characters that you can include in an expression is 32,767.
You can evaluate expressions that you configure in the Expression Editor of an Expression transformation.
When you test an expression, you can enter sample data and then evaluate the expression. Evaluate expressions in reusable transformations in the Transformation Designer. Evaluate expressions in non-reusable transformations in the Mapping Designer. Some functions do not support evaluating an expression when you set the port data type to either Binary or Date/Time.

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