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hql 子查询 怎么写 sElECt * From (sElECt * From ...

Hibernate也有方法执行sql语句,像这种带子查询的语句hql好像执行不了,复杂我们一般都用sql语句,Hibernate执行sql如下: Query query = session.createSQLQuery(sql).setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP); List list = qu...

分组查询,你前面查询的列不能用*号, select t.u_id from (select * from loginrecord order by l_time desc) t group by t.u_id 不知是否正确,你试试...

hql语句本质就是sql语句,你这样的写,基本上也可以的

select * from A a where (select count(*)=0 from B b where b.x=a.id)

我要统计出 一个子查询结果集的记录条数(其中子查询是动态可变的)。例如:select count(*) from ( select o from TabCompany as o )你上面这个句子在数据库里面运行了没,一般在hibernate里面的sql语句没有区别的。

SQLECT A1,(SELECT B1 FROM B WHERE B2 = A1 and rownum=1) FROM A,也可以再嵌套里排序

换成sql查询。 hql好像不能这么写。

可以直接使用SQL语句查询,如: 其中session.createSQLQuery(String sql)就是使用SQL语句查询的

select stu from (select stu1 from Student as stu1 where stu1.age=20 or stu1.age=21 ) as stu where stu.name like '张%' and stu.age='女' 其实没必要使用子查询 select stu from Student as stu where stu.name like '张%' and stu.age='...

获取分组的最大排序序号即可啦: select top 1 d.lie1 ROW_NUMBER() OVER(order by d.c_lie1) as _page_row_num_hb from individual d group by d.c_ssn,d.full_name order by _page_row_num_hb desc

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