public override DbExpression Visit(DbLimitExpression expression)
        {
            EntityUtil.CheckArgumentNull(expression, "expression");

            DbExpression result = expression;

            DbExpression newArgument = this.VisitExpression(expression.Argument);
            DbExpression newLimit    = this.VisitExpression(expression.Limit);

            if (!object.ReferenceEquals(expression.Argument, newArgument) ||
                !object.ReferenceEquals(expression.Limit, newLimit))
            {
                Debug.Assert(!expression.WithTies, "Limit.WithTies == true?");
                result = CqtBuilder.Limit(newArgument, newLimit);
            }
            NotifyIfChanged(expression, result);
            return(result);
        }