java - 休眠嵌套选择

Question

我想从以下查询中仅选择 myEntity (e) 结果

String query = "select e, to_char(message_date, 'yyyyMMdd') as dateOnly from myEntity e where e.lang = 'DE' and e.message.messageDate > sysdate-5 order by dateOnly desc, e.message.messageType asc"

所以当我使用下面的代码

entityManager.createQuery(query).getResultList();

要获得结果，因为List<myEntity>这意味着执行以下查询

select e from (select e, to_char(message_date, 'yyyyMMdd') as dateOnly from myEntity e where e.lang = 'DE' and e.message.messageDate > sysdate-5 order by dateOnly desc, e.message.messageType asc)

Answer 1

使用以下查询解决了我的问题

String query = "select e from myEntity e where e.lang = 'DE' and e.message.messageDate >     sysdate-5 order by to_char(message_date, 'yyyyMMdd') desc, e.message.messageType asc"