Table of Contents

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  1. Preface
  2. Introduction to Transformations
  3. Transformation Ports
  4. Transformation Caches
  5. Address Validator Transformation
  6. Aggregator Transformation
  7. Association Transformation
  8. Bad Record Exception Transformation
  9. Case Converter Transformation
  10. Classifier Transformation
  11. Comparison Transformation
  12. Consolidation Transformation
  13. Data Masking Transformation
  14. Data Processor Transformation
  15. Decision Transformation
  16. Duplicate Record Exception Transformation
  17. Expression Transformation
  18. Filter Transformation
  19. Hierarchical to Relational Transformation
  20. Java Transformation
  21. Java Transformation API Reference
  22. Java Expressions
  23. Joiner Transformation
  24. Key Generator Transformation
  25. Labeler Transformation
  26. Lookup Transformation
  27. Lookup Caches
  28. Dynamic Lookup Cache
  29. Match Transformation
  30. Match Transformations in Field Analysis
  31. Match Transformations in Identity Analysis
  32. Normalizer Transformation
  33. Merge Transformation
  34. Parser Transformation
  35. Python Transformation
  36. Rank Transformation
  37. Read Transformation
  38. Relational to Hierarchical Transformation
  39. REST Web Service Consumer Transformation
  40. Router Transformation
  41. Sequence Generator Transformation
  42. Sorter Transformation
  43. SQL Transformation
  44. Standardizer Transformation
  45. Union Transformation
  46. Update Strategy Transformation
  47. Web Service Consumer Transformation
  48. Parsing Web Service SOAP Messages
  49. Generating Web Service SOAP Messages
  50. Weighted Average Transformation
  51. Window Transformation
  52. Write Transformation
  53. Appendix A: Transformation Delimiters

Developer Transformation Guide

Developer Transformation Guide

String Substitution

String Substitution

Use string variables to replace components of query statements. For example, you can use the string variable to replace the table name in a query. Or, you can substitute the column names in a SELECT statement.
To substitute the table name, configure an input port to receive the table name from each input row. In the SQL Editor, select the port from the
String Substitution
list of ports. The Developer tool identifies the input port by name in the query and encloses the name with the tilde (~).
The following query contains a string variable, ~Table_Port~:
SELECT Emp_ID, Address from ~Table_Port~ where Dept = ‘HR’
The source might pass the following values to the
Table_Port
column:
Table_Port       
Employees_USA
Employees_England
Employees_Australia
The Data Integration Service replaces the ~Table_Port~ variable with the table name value in the input port:
SELECT Emp_ID, Address from Employees_USA where Dept = ‘HR’ SELECT Emp_ID, Address from Employees_England where Dept = ‘HR’ SELECT Emp_ID, Address from Employees_Australia where Dept = ‘HR’

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