JPA中的jpql-@Query的查询使用(参数传递的坑,包含对象的参数)

单参数查询

//    @Query(value="select * from cst_customer where cust_name=?1",nativeQuery = true)
//    @Query(value="from Customer  where cust_name= ?1")
//    @Query(value="select c from Customer  c where c.custName=?1")
//    @Query(value="from Customer c where c.custName=:#{#custName}")
    @Query(value="from Customer c where c.custName=:custName")
    List<Customer> findAllCustomerByName(@Param("custName") String custName);

这几种方式是等价的

• @Query(value=“select * from cst_customer where cust_name=?1”,nativeQuery = true)
• @Query(value=“from Customer where cust_name= ?1”)
• @Query(value=“select c from Customer c where c.custName=?1”)
• @Query(value=“from Customer c where c.custName=:#{#custName}”)
• @Query(value=“from Customer c where c.custName=:custName”)

多参数查询

//    @Query(value="from Customer  c where c.custId=?2 and c.custName=?1")
//    @Query(value="from Customer  c where c.custId=:#{#custId} and c.custName=:#{#custName}")
@Query(value="from Customer  c where c.custId=:custId and c.custName=:custName")
List<Customer> findCustomersByNameAndIndus(@Param("custName") String name,@Param("custId") Long id);

这几种方式是等价的(还有一种原生sql的方式)

• @Query(value=“from Customer c where c.custId=?2 and c.custName=?1”)
• @Query(value=“from Customer c where c.custId=:#{#custId} and c.custName=:#{#custName}”)
• @Query(value=“from Customer c where c.custId=:custId and c.custName=:custName”)

参数为对象查询

@Query(value="from Customer  c where c.custId=:#{#customer.custId}")
Customer findCustomerByInfo(@Param("customer") Customer customer);