hibernate 原生sql

交叉连接-笛卡儿积(避免使用)

  select * from A,B

内连

  |-隐式内连接

    select * form A,B where a.id = b.aid

  |-显示内连接

    select * from A inner join B on a.id = b.aid

外连接

  |-左外连接

    select * from A left inner join B on a.id = b.aid

  |-右外连接

    select * from A right inner join B on a.id = b.aid

【基本查询】

  String sql = "select * from cst_customer"

  SQLQuery query = session.createSQLQuery(sql)

  List<Object[]> list = query.list() 如果要想写成List<Customer> list = query.list()这样的形式,那么之前要加上query.addEntiry(Customer.class)

【条件查询  问号占位符】

  String hql = “ select * from cst_customer where cust_id = ?"

  SQLQuery query = session.createSQLQuery(sql)

  query.setParameter(0,1l) //占位符是从0开始

  query.addEntity(Customer.class)

  Customer customer = query.uniqueResult()

【分页查询】

  String hql = “ select * from cst_customer limit ?,?"

  SQLQuery query = session.createSQLQuery(sql)

  query.setParameter(0,0) //占位符是从0开始

  query.setParameter(1,1) //设置每页显示条数

  query.addEntity(Customer.class)

  List<Customer> lsit= query.list()

posted @ 2017-07-26 17:35  发福大叔  阅读(246)  评论(0编辑  收藏  举报