Subreports are regular reports contained in a field in another report (the main report). Subreports are usually designed to display detail information based on a current value in the main report, in a master-detail scenario.
In the following example, the main report contains categories and the subreport in the Detail section contains product details for the current category:
详情请参见文档:
16-Creating a Master-Detail Report Using Subreports.docx
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