nativequery

So we've got a whole lot of Postgres SQL queries stored in files and used from PHP. The task is to replace PHP with Java. We want to reuse as much of the queries "as is" to keep the migration path short. I can't get the Array parameters to work. Here's a query example: update user_devices set some_date = now() where some_id in ( select distinct some_id from user_devices where user_id = any(:userIDs) and device_id = any(:deviceIDs) and exists (select 1 from users where user_id = any(:userIDs) and customer_id = :customerID) ); Note the "any" clauses, which cause the problem, because they expect

like this: public interface XXXRepository extends CrudRepository<XXX, Integer> { @Query(value = "select * from ?1 where ...", nativeQuery = true) List<XXX> findByXXX(String tableName, ...);} It gives MYSQL syntax error with upon codes. The syntax error shows that the table name in the SQL is surrounded with "'". This is not possible. Parameters are only allowed in the where clause. You can use entitymanger in jpa project. @Autowired EntityManager entityManager; entityManager.createNativeQuery("select * from "+tableName+"") 来源： https://stackoverflow.com/questions/40956013/how-to-replace-table

I have a User entity and a Role entity. The relationship is defined like this: @OneToMany @JoinTable(name="USER_ROLES", inverseJoinColumns=@JoinColumn(name="ROLE_ID")) private List<Role> roles = null; Now, when I delete a role, I need to delete the role from all the users that have that role. Normally you'd do something like this by looking up all the users with this role, removing the role from the list, and saving the user. However, when there could be over a million users, I don't want to be looping over this many entities in the app. So, I'm wanting to use a native query to remove rows

I assume that I need to build a native query to truncate a table using Doctine2. $emptyRsm = new \Doctrine\ORM\Query\ResultSetMapping(); $sql = 'TRUNCATE TABLE Article'; $query = em()->createNativeQuery($sql, $emptyRsm); $query->execute(); This gives the error SQLSTATE[HY000]: General error What do I need to change to my code to make this work? cmt Beware of Truncating Tables Beware of truncating tables in any RDBMS, especially if you want to use explicit transactions for commit/rollback functionality. DDL statements perform an implicit-commit Truncate table statements are data definition

I'm using Hibernate. I wrote some native query because I need to use sub select statement. Query looks like this: SELECT sub.rownum FROM (SELECT k.`news_master_id` AS id, @row := @row + 1 AS rownum FROM keyword_news_list k JOIN (SELECT @row := 0) r WHERE k.`keyword_news_id` = :kid ORDER BY k.`news_master_id` ASC) AS sub WHERE sub.id = :nid When I run this query like this: sessionFactory.getCurrentSession() .createSQLQuery(query) .setParameter("kid", kid) .setParameter("nid", nid) .uniqueResult(); This exception comes out: org.hibernate.QueryException: Space is not allowed after parameter