/// <summary>
/// Defines the contents of the additional HAVING clause that follows the GROUP BY one, or
/// append the new ones to any previous specification, to accomodate extended logic for
/// this command if required.
/// <para>By default if any previous contents exist the new ones are appended using an AND
/// operator. However, the virtual extension methods 'x => x.And(...)' and 'x => x.Or(...)'
/// can be used to specify what logical operator to use.</para>
/// </summary>
/// <param name="having">The dynamic lambda expression that resolves into the contents of
/// this clause.</param>
/// <returns>A self-reference to permit a fluent syntax chaining.</returns>
public DataQuery <T> Having(Func <dynamic, object> having)
{
if (IsDisposed)
{
throw new ObjectDisposedException(this.ToString());
}
_Template.Having(having);
return(this);
}
