Group by values of a column. Group by values of a column.
Source
<xs:element name="Grouping" minOccurs="0" maxOccurs="unbounded" type="xs:string" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:annotation>
<xs:documentation>
Group by values of a column.
</xs:documentation>
</xs:annotation>
</xs:element>