| Имя | Описание |
|---|---|
| AbstractGroupExpression | Base class for group expressions. |
| GroupCountSortOrder | This can be used to indicate you want to sort based on the count in a count where you're aggregating values. |
| MemberGroupExpression | A group expression that aggregates based on values of a data member. This is the most common case. I.E. aggregating based on a "Type" field or property on the data object. |