SubData Tables
The purpose of the SubData Table element is to create a table that shows the child records from a hierarchical result set, or a "table within a table". This is useful for creating sub-reports and drill-down reports.
The following topics discuss the techniques required to work with SubData Tables:
Many developers find it easier to use a subreport that includes a regular Data Table, rather than a subData Table. One advantage to this approach is that a subreport, which is a separate report definition, can be independently developed and tested, and then embedded in a parent report using the SubReport element. This approach works especially well with the More Info
Row element (described below) and does not require hierarchical data. For more information on subreports, see SubReports.