Table of Contents


  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



Lookup condition

Lookup condition

The lookup condition defines when the lookup returns values from the lookup object. When you configure the lookup condition, you compare the value of one or more fields from the data flow with values in the lookup object.
A lookup condition includes an incoming field from the data flow, a field from the lookup object, and an operator. For flat file and database connections, you can use the following operators in a lookup condition:

    = (Equal to)

    < (Less than)

    > (Greater than)

    <= (Less than or equal to)

    >= (Greater than or equal to)

    != (Not equal to)

For other connections and for Lookup transformations that use a dynamic cache, you can use the = (Equal to) operator in a lookup condition.
Note the following information about lookup conditions:
  • When you enter multiple conditions, the
    task evaluates the lookup conditions using the AND logical operator to join the conditions. It returns rows that match all of the lookup conditions.
  • When you include multiple conditions, to optimize performance enter the conditions in the following order:
    1. = (Equal to)
    2. < (Less than), <= (Less than or equal to), > (Greater than), >= (Greater than or equal to)
    3. != (Not equal to)
  • The lookup condition matches null values. When an input field is NULL, the
    task evaluates the NULL equal to null values in the lookup.
  • In advanced mode, the mapping becomes invalid if the lookup condition contains a binary data type.
  • If the lookup condition is completely parameterized, then you need to enter the lookup condition in the format:
    <Lookup field><Operator><Incoming field>
    If multiple conditions are required, join them with AND.


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