DataGrouping Element (RDL)
Defines a grouping for custom report item data.
The Static element indicates that this is a static group. This element must be true if any ancestor grouping is a detail grouping. This element must be false if any ancestor grouping is defined as static.
The Grouping element contains expressions by which to group the data. This element is not allowed if the Static element is set to true.
The Sorting and Subtotal elements are ignored if the Static element is set to true.