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文章 2023-07-26 来自：开发者社区

EF框架-SQL语句查询与修改

机房合作当中使用到了框架首先有很多的不同之处，大大方便的编程的时间。首先在查询与修改这两个点出发。查询这是使用SQL语句进行的查询，查询到的是多条信息 public List<CancelCardModel> SelectCancelRecord(string iD) { using (InternetBarSystemEntit...

问答 2022-04-15 来自：开发者社区

hibernate框架使用sql语句 select count查询不到

代码如下： String sql = "select count(servId) from "+set; sess=sessionFactory.openSession(); tx=sess.beginTransaction(); Query query = sess.createSQLQuery(sql); BigDecimal count...

文章 2022-02-16 来自：开发者社区

（PDF.NET框架实例讲解）将任意复杂的SQL查询映射成实体类

通常情况下我们的ORM框架都是将单表或者视图映射成一个实体类，有时候也会将存储过程映射成实体类，如果处于系统移植性的考虑，你不想写存储过程，那这些复杂的SQL查询怎么映射成实体类？实际上，不管是单表，视图，存储过程，SQLSERVER的表值函数，自定义的SQL查询，甚至是任意复杂的SQL查询，都可以用一个SQL语句来表示，只要我们的ORM框架能够实现将SQL语句的查询结果映射成实体类，那么使用....

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