- 1.hql更新
- String hql = "update PhUser set realName=?";
- int row=this.getSession().createQuery(hql).setString(0, "小李想").executeUpdate();
- PhUser 类名
- 2.hql删除
- String hql = "delete PhUser a where a.userId=2";
- int row=this.getSession().createQuery(hql).executeUpdate();
- 还有个这种的格式:
- final String hql = "delete PhRoleFunction as a where a.roleId = "
- + roleId;
- this.getHibernateTemplate().execute(new HibernateCallback() {
- public Object doInHibernate(Session session)
- throws HibernateException, SQLException {
- return session.createQuery(hql).executeUpdate();
- }
- });更新也可以写成这样的格式
- 3.hql单表查询
- String hql = "from PhUser a where a.userId=" + userId;
- List list = this.getHibernateTemplate().find(hql);
- 4.hql多表查询
- (1)String hql = "select new map(a.CUId as CUId,a.unitName as unitName,b.CUFId as CUFId,b.UFName as UFName)
- from PhCorrelativeUnit a,PhCorrelativeUnitFunction b where a.CUId=b.CUId";
- List list = this.getHibernateTemplate().find(hql);
- 多个表的字段放到map中,map的键值就是as后面的别名,如果没有as就是字段名
- (2) String hql = "SELECT NEW COM.PHANTOM.APPEAL.ACTION.BEAN.DEALPAPER(A.ID AS ID, A.BILLID AS BILLID, A.STATE AS STATE, A.CREATOR AS CREATOR, A.CREATETIME AS CREATETIME , 26. B.EVENTCONTENT AS EVENTCONTENT , C.REALNAME AS REALNAME, B.BILLCODE AS BILLCODE, 27. B.CITNAME AS CITNAME )
FROM PHDEALBILL A
,PHACCEPTBILL B
,PHUSER C 28.WHERE A.DEPARTMENTID="+ billid+ "
AND A.STATE = 0
AND A.BILLID = B.BILLID 29.AND A.CREATOR = C.USERID
ORDER BY A.BILLID - ";
- return this.getHibernateTemplate().find(hql);
- 另外就是写一个类,对应你要查询的字段,这里的类名是new com.phantom.appeal.action.bean.DealPaper,里面对应查询的字段名
- 5.得到记录数
- String hql = "select count(*) from PhUser";
- List list = this.getHibernateTemplate().find(hql);
- return ((Long) list.get(0)).intValue();
hql语句总结
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转载自cngolon.iteye.com/blog/1933895
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