Spring 引导获取查询结果，列为 null

Question

@Query("select a from UsersRelation a where a.usersId = ?1 and a.status=1 and a.activeFlag=1 and (a.requestReasonId = :requestReasonId OR a.requestReasonId is :requestReasonIdIsNull) ")
List<UsersRelation> findUsersRelationWithReason(Long usersId, @Param("requestReasonId") Long requestReasonId, @Param("requestReasonIdIsNull") Long requestReasonIdIsNull);

example call findUsersRelationWithReason(1, null)

但没有给我预期的结果，例如 requestReasonId 等于或 null

Answer 1

只需修改查询并放弃第二个输入参数

select a from UsersRelation a where a.usersId = ?1 and a.status=1 and a.activeFlag=1 and (a.requestReasonId = :requestReasonId OR a.requestReasonId is null)