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2021/03/25 1

cannot simultaneously fetch multiple bags - 1:N 다중 JOIN 도중 오류

Entity2 와 Entity3를 List로 받으려고 시도 했을 때 발생한 오류 - SET 바꿔서 해결(?) 양방향, 단방향, 1:N, N:1, N:M 항상 신경써야함.. Entity 1 @Getter @Setter @Entity(name = "a_table") public class ATable { @OneToMany @JoinColumn(name = "user_id") private Set b; @OneToMany @JoinColumn(name="user_id") private Set c; @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name="id", updatable = false, nullable = false, inserta..

JAVA/JAVA__Interface-JPA 2021.03.25
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