/// <summary>
/// Defines the contents of the additional GROUP BY clauses, or append the new ones to any
/// previous specification, to accomodate extended logic for this command if required.
/// </summary>
/// <param name="groupbys">The collection of dynamic lambda expressions that resolve into
/// the contents of this clause:
/// <para>- A string as in 'x => "Table.Column"', where the table part is optional.</para>
/// </param>
/// <returns>A self-reference to permit a fluent syntax chaining.</returns>
public DataQuery <T> GroupBy(params Func <dynamic, object>[] groupbys)
{
if (IsDisposed)
{
throw new ObjectDisposedException(this.ToString());
}
_Template.GroupBy(groupbys);
return(this);
}
