Tag: or condition

使用OR条件而不是AND条件连接列的注释

我有两个java类， Relation和Person ，它们都存在于我的数据库中。 人： @Entity @Table(name = “persons”) public class Person { @Id @Column private int id; @Column private String name; @OneToMany(fetch = FetchType.EAGER) @JoinColumns({ @JoinColumn(name = “slave_id”, referencedColumnName=”id”), @JoinColumn(name = “master_id”, referencedColumnName=”id”) }) private List relations; //Getters and setters } 关系： @Entity @Table(name = “relations”) public class Relation { @Id @Column private int id; […]