Table of Contents

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  1. Preface
  2. Transformations
  3. Source transformation
  4. Target transformation
  5. Access Policy transformation
  6. B2B transformation
  7. Aggregator 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 Generator 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

Target update override

Target update override

By default,
Data Integration
updates target tables based on key values. However, you can override the default UPDATE statement for each target in a mapping. You might want to update the target based on non-key columns.
You can enter a target update override for relational and ODBC connections. For information on the specific steps to override the default target UPDATE statement, see the help for the appropriate connector.
Override the UPDATE statement in the Target transformation advanced properties. Enter the target UPDATE statement in the
Update Override
field. In some relational connections, you can generate the default UPDATE statement. Click
Configure
to generate the default UPDATE statement and then modify the statement.
Because the target fields must match the target column names, the update statement includes the keyword :TU to specify the fields in the target transformation. If you modify the UPDATE portion of the statement, you must use :TU to specify fields.
When you override the default UPDATE statement, you must enter an SQL statement that is valid for the database.
Data Integration
does not validate the syntax.

Example

A mapping passes the total sales for each salesperson to the T_SALES table.
Data Integration
generates the following default UPDATE statement for the target T_SALES:
UPDATE T_SALES SET EMP_NAME = :TU.EMP_NAME, DATE_SHIPPED = :TU.DATE_SHIPPED, TOTAL_SALES = :TU.TOTAL_SALES WHERE EMP_ID = :TU.EMP_ID
You want to override the WHERE clause to update records for employees named Mike Smith only. To do this, you edit the WHERE clause as follows:
UPDATE T_SALES SET DATE_SHIPPED = :TU.DATE_SHIPPED, TOTAL_SALES = :TU.TOTAL_SALES WHERE :TU.EMP_NAME = EMP_NAME AND EMP_NAME = 'MIKE SMITH'

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