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

Query Statement Processing

Query Statement Processing

The type of query determines how many rows the SQL transformation returns. The SQL transformation running in query mode can return zero, one, or multiple rows. When the query contains a SELECT statement, the SQL transformation returns each column from the database to an output port. The transformation returns all qualifying rows.
The following table lists the output rows the SQL transformation generates for different types of query statements when no errors occur in query mode:
Query Statement
Output Rows
UPDATE, INSERT, DELETE only
Zero rows.
One or more SELECT statements
Total number of database rows retrieved.
DDL queries such as CREATE, DROP, TRUNCATE
Zero rows.

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