hsg_happyLearning的博客

Spring data jpa懒加载假设有两张表Person和Country，Person和Country是多对一的关系，我们定义好实体类然后自动生成数据表配置文件中的配置信息：spring.datasource.url=jdbc:mysql://127.0.0.1:3306/entity_demo?useSSL=falsering.datasource.username=rootspr...

Spring Data Jpa高级用法1、原生SQL语句查询@Query(value = "select count(*) from tran_problem where propose_user=?1 and review_notice_flag!=?2 and status=?3", nativeQuery=true)Integer findCountByUserIdAndReviewN...