BIRT: A Field Guide to Reporting

Chapter 15. Filtering Data

Data sources typically contain large amounts of data. Reports usually only need a specific subset of data that meets certain criteria. You can select specific records to use in a report by using filters. For example, rather than get information about all customers, you can create filters to select customers in a certain region or customers with a certain credit rank. You can also design filters that provide the report user with the opportunity to specify the filter criteria when the report runs. This chapter discusses creating filters for which you specify the criteria.

Filtering opportunities

Generally, one goal in developing reports with acceptable performance is to limit the amount of data you use to just the data ...