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

Lookup Transformation Values

Lookup Transformation Values

The Lookup transformation contains values for input ports, the lookup, and output ports. If you enable a dynamic lookup cache, the output port values vary based on how you configure the dynamic lookup cache.
The Lookup transformation contains the following types of values:
Input value
Value that the Integration Service passes into the Lookup transformation.
Lookup value
Value that the Integration Service inserts into the cache.
Output value
Value that the Integration Service passes from the output port of the Lookup transformation. The output value of the lookup/output port depends on whether you choose to output old or new values when the Integration Service updates a row.
For example, the following Lookup transformation uses a dynamic lookup cache:
The mapping contains a source qualifier, a Lookup transformation, an Expression transformation, and a Router transformation. The source qualifier and the Lookup transformation are open to show port names and datatypes. The Expression transformation and the Router transformation are iconized.
You define the following lookup condition:
IN_CUST_ID = CUST_ID
By default, the row type of all rows entering the Lookup transformation is insert. To perform both inserts and updates in the cache and target table, you select the
Insert Else Update
property in the Lookup transformation.
The following sections describe the values of the rows in the cache, the input rows, the lookup rows, and the output rows as you run the session.

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