HQL多表联合查询的问题 HQL查询多表的时候，取出结果是两个对象的列表，但是我只要我自己想要的属性，之前的HQL语句是这样写的：
from
Hytxbz h,Tgbzk t
where
h.hytxbzid
=
t.hytxbzid
and
t.bztgid
=
:bztgid
结果我debug去看query.list();是Hytxbz和Tgbzk两个对象的列表，结果并不是我想要的，我改成
from
Hybztx h
where
h.hytxbzid
in
(
select
t.hytxbzid
from
Tgbzk
where
t.bztgid
=
:bztgid)
还是不行，google一把，发现可以这样写
select
h
from
Hytxbz
as
h,Tgbzk
as
t
where
h.hytxbzid
=
t.hytxbzid
and
t.bztgid
=
:bztgid
如果想取得对应属性的话，也可以这样写
select
h.hytxbzid
from
Hytxbz
as
h,Tgbzk
as
t
where
h.hytxbzid
=
t.hytxbzid
and
t.bztgid
=
:bztgid
发现in的语句可以这样写
String ids[]
=
new
String[]
{"1","2","3"}
; 
String hql
=
"
from com,you.YourPOJO where id in (?)
"
;
Query query
=
session.createQuery(hql);
query .setParameters(ids);
相关方法：
Query setParameters(Object[] objectArray, Type[] typeArray)
throws
HibernateException;
Query setParameterList(String string, Collection collection, Type type)
throws
HibernateException;
Query setParameterList(String string, Collection collection)
throws
HibernateException;
Query setParameterList(String string, Object[] objectArray, Type type)
throws
HibernateException;
Query setParameterList(String string, Object[] objectArray)
throws
HibernateException