Which approach is more efficient with hibernate

Let's consider a class Transaction

@Entity
public class Transaction {

@ManyToOne(fetch = FetchType.EAGER)
private Business business;

    @Column(name = "business_code")
    private String businessCode;


}

which method is more efficient to fetch transactions by business using byBusinessCode which is a column in the table Transaction or using byBusiness so the whole object Business which is a dependency in the class Transaction ?

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