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

Group By Columns

Group By Columns

You can define groups for aggregations in the aggregate views, instead of performing aggregations across all input data. For example, you can find the total sales grouped by region, instead of finding the total company sales.
To define a group for the aggregate view, select the appropriate column in the aggregate view editor. You can select multiple group by columns to create a new group for each unique combination.
When you group values, Data Validation Option produces one row for each group. If you do not group values, the Data Validation Option returns one row for all input rows. Data Validation Option returns the last row of each group or the last row received with the result of the aggregation.
When selecting multiple group by columns in the aggregate view, Data Validation Option uses column order to determine the order by which it groups. Order group by columns to ensure the appropriate grouping because group order can affect the results. For example, the results of grouping by DATE then PRODUCT_NAME can vary from grouping by PRODUCT_NAME then DATE.