Table of Contents

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  1. Preface
  2. Transformations
  3. Source transformation
  4. Target transformation
  5. Aggregator transformation
  6. Cleanse transformation
  7. Data Masking transformation
  8. Deduplicate transformation
  9. Expression transformation
  10. Filter transformation
  11. Hierarchy Builder transformation
  12. Hierarchy Parser transformation
  13. Hierarchy Processor transformation
  14. Input transformation
  15. Java transformation
  16. Java transformation API reference
  17. Joiner transformation
  18. Labeler transformation
  19. Lookup transformation
  20. Mapplet transformation
  21. Normalizer transformation
  22. Output transformation
  23. Parse transformation
  24. Python transformation
  25. Rank transformation
  26. Router transformation
  27. Rule Specification transformation
  28. Sequence Generator transformation
  29. Sorter transformation
  30. SQL transformation
  31. Structure Parser transformation
  32. Transaction Control transformation
  33. Union transformation
  34. Velocity transformation
  35. Verifier transformation
  36. Web Services transformation

Transformations

Transformations

Input groups

Input groups

By default, a Union transformation has two input groups. If you want to merge data from more than two sources, add an input group for each additional source. Each group can have different field rules for each upstream transformation.
The input groups have the following characteristics:
  • The Union transformation initializes its output fields based on fields in the first source that you connect to an input group.
  • Each input group can use a different field mapping mode or parameter.
  • You can parameterize the field mappings or define the field mapping for each input group.
To add an input group, in the Mapping Designer, connect an upstream transformation to the "New Group" group of the Union transformation. You can also add input groups on the
Incoming Fields
tab of the Union transformation.
You can rename input groups. You can also delete input groups as long as there are at least two remaining input groups. Rename and delete input groups on the
Incoming Fields
tab.