JPA报错：could not extract ResultSet解决记录

Hibernate: select nextval ('hibernate_sequence')
2020-06-08 17:00:37.548  WARN 15244 --- [           main]    : SQL Error: 0, SQLState: 42P01
2020-06-08 17:00:37.549 ERROR 15244 --- [           main]    : 错误: 关系 "hibernate_sequence" 不存在
  位置：17

: Request processing failed; nested exception is : could not extract ResultSet; SQL [n/a]; nested exception is : could not extract ResultSet

错误原因： 关系 "hibernate_sequence" 不存在，实际是entity类里@GeneratedValue少了strategy

解决办法：添加strategy，如下图

/**
     * 商品编号
     */
    @Id
    @GeneratedValue(strategy = )
    @Column(name = "bgi_id")
    private Long id;

当然还会有其它的错误原因，欢迎补充。