Table of Contents

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  1. Preface
  2. Informatica Developer
  3. The Model Repository
  4. Searches in Informatica Developer
  5. Connections
  6. Physical Data Objects
  7. Flat File Data Objects
  8. Logical View of Data
  9. Viewing Data
  10. Application Deployment
  11. Application Patch Deployment
  12. Application Patch Deployment Example
  13. Continuous Integration and Continuous Delivery (CI/CD)
  14. Object Import and Export
  15. Appendix A: Data Type Reference
  16. Appendix B: Keyboard Shortcuts
  17. Appendix C: Connection Properties

Developer Tool Guide

Developer Tool Guide

Select Distinct

Select Distinct

You can select unique values from sources in a customized data object or a relational data object instance with the select distinct option. When you enable select distinct, the Data Integration Service adds a SELECT DISTINCT statement to the default SQL query.
Use the select distinct option to filter source data. For example, you might use the select distinct option to extract unique customer IDs from a table that lists total sales. When you use the relational data object in a mapping, the Data Integration Service filters data earlier in the data flow, which can increase performance.

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