Table of Contents

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  1. Preface
  2. Transformations
  3. Source transformation
  4. Target transformation
  5. Access Policy transformation
  6. Aggregator transformation
  7. B2B transformation
  8. Cleanse transformation
  9. Data Masking transformation
  10. Data Services transformation
  11. Deduplicate transformation
  12. Expression transformation
  13. Filter transformation
  14. Hierarchy Builder transformation
  15. Hierarchy Parser transformation
  16. Hierarchy Processor transformation
  17. Input transformation
  18. Java transformation
  19. Java transformation API reference
  20. Joiner transformation
  21. Labeler transformation
  22. Lookup transformation
  23. Machine Learning transformation
  24. Mapplet transformation
  25. Normalizer transformation
  26. Output transformation
  27. Parse transformation
  28. Python transformation
  29. Rank transformation
  30. Router transformation
  31. Rule Specification transformation
  32. Sequence transformation
  33. Sorter transformation
  34. SQL transformation
  35. Structure Parser transformation
  36. Transaction Control transformation
  37. Union transformation
  38. Velocity transformation
  39. Verifier transformation
  40. Web Services transformation

Transformations

Transformations

Ignore fields in comparison

Ignore fields in comparison

When you use a dynamic lookup cache, you can configure fields to be ignored when
Data Integration
compares the values in the lookup fields with the values in the associated incoming fields. Ignoring some fields in the comparison can improve mapping performance.
When you run a mapping that uses a dynamic lookup cache, by default,
Data Integration
compares the values in all lookup fields with the values in the associated incoming fields.
Data Integration
compares the values to determine whether to update the row in the lookup cache. When a value in an incoming field differs from the value in the lookup field,
Data Integration
updates the row in the cache.
If you do not want to compare all fields, you can choose the fields that you want
Data Integration
to ignore when it compares fields. For example, the source data includes a column that indicates whether the row contains data that you need to update. Enable the
Ignore in Comparison
property for all lookup fields except the field that indicates whether to update the row in the cache and target table.
Configure the fields to be ignored on the
Return Fields
tab of the Lookup transformation. To ignore a field, enable the
Ignore in Comparison
property for the field.
You must configure the transformation to compare at least one field unless the lookup condition contains all the lookup fields.

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