1 Why can't a column be set to null using JPA? Related 22 how spring data jpa repository.save only do update 0 How to correctly use Spring Data Repository#save()? 3 Spring JPA Repository save not Inserting into the database 0 Hibernate and spring data repository, object incomplete a...
使用JPA中@Query注解实现update操作,代码如下: @Transactional @Modifying(clearAutomatically = true) @Query(value =..."updateinfo p set p.status =? 1.2K70 使用JPA中@Query注解实现update操作 spring使用jpa进行update操作主要有两种方式: 1、调用保存实体的方法 1)保存一个实体:repository.save(T en...
@Repository public interface CustomerRepository extends JpaRepository<Customer , Long> { @Query("update Customer c set c.name = :name WHERE c.id = :customerId") void setCustomerName(@Param("customerId") Long id, @Param("name") String name); } Some solutions claim to use Spring data a...
解决方法二:不使用Native Query【差别:nativeQuery = false. value采用JPQL方法.】 public interface ParaRepository extends JpaRepository<Para,String>{ @Modifying @Transactional @Query(nativeQuery = false, value = "update Para set itemValue = ?2 where itemName = ?1") int update(String itemName, St...
I extend the given Example (example-jpa) with the PetRepository. I create a update method inside the Controller: @Put("/{petId}")` HttpStatus update(@QueryValue("petId") Long petId, Pet pet) { Optional<Pet> result = petRepository.findById(petId); if (result.isPresent()) { Pet cur...
In findByIdIn(Collection> c) where id in (?) 试验了一下,可以满足我的需求。先贴代码 package com.yd.lipstick.dao.write; import com.yd.lipstick.entity.Position; import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.data.jpa.repository.Modifying; ...
public interface ProductsRepository extends JpaRepository<Products, Integer> { @Query("select p.name from Products p where p.id = ?1") List<String> findProductByCategory(Integer id); @Modifying(clearAutomatically = true) @Query("update Products p set p.id =:id, p.name =:name, p.price ...
使用Spring Data JPA自定义update执行慢的问题 https://blog.csdn.net/wherwh/article/details/89380494 publicinterfaceParaRepositoryextendsJpaRepository<Para,String>{ @Modifying @Transactional @Query(nativeQuery=true, value = "update clr_para set item_value = ?2 where item_name = ?1")intupdate(String...
3、BatchRepository @Slf4j@RepositorypublicclassBatchRepository{@PersistenceContextprotectedEntityManager entityManager;/** * Spring Data JPA调用的是Hibernate底层的实现。每次批量保存时,攒够 batchSize 条记录再集中em.flush(), * *@seeorg.hibernate.cfg.BatchSettings#STATEMENT_BATCH_SIZE ...
@Repository public interface UserRepository extends JpaRepository<UserEntity, Long> { @Modifying(clearAutomatically = true) @Transactional @Query(value = "update public.user set name ='1'", nativeQuery = true) void updateUserByName(); List<UserEntity> queryByName(String name); Page<UserEntity> ...