Table of Contents

Search

  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

Configuring the Expression Transformation

Configuring the Expression Transformation

The Expression transformation has an input/output port for each source column. It passes column names to the SQL transformation based on the value of the PriceCode column.
The following figure shows the ports in the Expression transformation that return column names:
The Ports tab in the Edit Transformations dialog box contains the port name, datatype, precision, scale, and expression columns. The Ports tab also contains the Select transformation, Transformation type, Default value, and Description fields.
The SQL transformation has the following columns that contain the results of expressions:
  • UnitPrice_Query.
    Returns the column name “MUnitprice,” “RUnitPrice,” or “WUnitprice” based on the whether the price code is “M,” “R,” or “W.”
    DECODE(PriceCode,'M', 'MUnitPrice','R', 'RUnitPrice','W', 'WUnitPrice')
  • PkgPrice_Query.
    Returns the column name “MPkgPrice,” “RPkgPrice,” or “WPkgPrice,” based on the whether the price code is “M,” “R,” or “W.”
    DECODE(PriceCode,'M', 'MPkgPrice','R', 'RPkgPrice','W', 'WPkgPrice')

0 COMMENTS

We’d like to hear from you!