[Spring] @DynamicInsert 사용이유@Getter@NoArgsConstructor(access = AccessLevel.PROTECTED)@Entitypublic class Knowledge { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @Column(nullable = false) private String thumbnailImageUrl; @Column(nullable = false) private String contentImageUrl; @Column(columnDefinition = "boolean default false") private Boo..