Table of Contents

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  1. Preface
  2. Introduction to Data Validation Option
  3. Repositories
  4. XML Data Source
  5. Tests for XML Data Sources
  6. Connections
  7. Expressions
  8. Table Pairs
  9. Tests for Table Pairs
  10. Single-Table Constraints
  11. Tests for Single-Table Constraints
  12. Examples of Tests from Spreadsheets
  13. SQL Views
  14. Lookup Views
  15. Join Views
  16. Aggregate Views
  17. Business Intelligence and Reporting Tools Reports
  18. Dashboards
  19. DVOCmd Command Line Program
  20. Troubleshooting
  21. Appendix A: Datatype Reference
  22. Appendix B: Reporting Views
  23. Appendix C: Metadata Import Syntax
  24. Appendix D: Jasper Reports
  25. Appendix E: Glossary

Data Validation Option User Guide

Data Validation Option User Guide

Where Clause Processing

Where Clause Processing

A WHERE clause filters the records processed by all tests in a single table or table pair. The PowerCenter Integration Service and some data sources can process WHERE clauses.
A relational, Salesforce, SAP, or SAS data source can process the WHERE clause. Configure the data source to process the WHERE clause to reduce the number of rows that the PowerCenter Integration Service reads when it runs a Data Validation Option test. For example, Table A contains information about all U.S. customers. You want to test data for California customers only. In the table pair definition, you enter the WHERE clause
STATE = 'CA'
.
If the PowerCenter Integration Service processes the WHERE clause, the PowerCenter Integration Service reads all U.S. customers, and then applies a filter to the records that were read. If the data source processes the WHERE clause, the data source filters the customer records before the PowerCenter Integration Service reads the records. The test may run faster because the PowerCenter Integration Service reads a subset of the data.