hql语句的查询(hibernate query language) hql和sql语句的区别sql:语言关系型数据库里面的通用查询,结构化查询语言,查看的是表以及表的列hql是hibernate中独有的查询语言,其是面向对象的查询语句,查询的是类以及类中的属性注意:hql语句不能执行insert语句,且最终编写的hql语句会转化为相应的sql语句,以及hibernate的get/load方法只能通过主键的方式进行查询from User u where u.name='zhangsan' and
一.For windows 7(注:XP会有问题) 1.JDK-Java SE download: http://www.oracle.com/technetwork/java/javase/downloads/index.html 安装JDK和JRE JDK是Java的开发平台,在编写Java程序时,需要JDK进行编译处理:JRE是Java程序的运行环境,包含了JVM的实现 及Java核心类库,编译后的Java程序必须使用JRE执行.在下载的JDK安装包中集成了JDK与JRE,所以在安装JDK
OS:Win7 ,Tools:VS2015 DateTime.h #pragma once struct DateTime { public: unsigned Year; // years since 1900 unsigned short Month; // months since January - [0, 11] unsigned short Day; // day of the month - [1, 31] unsigned short Hour; // hours since m
FlatBuffers发布时,顺便也公布了它的性能数据,具体数据请见Benchmark. 它的测试用例由以下数据构成"a set of about 10 objects containing an array, 4 strings, and a large variety of int/float scalar values of all sizes, meant to be representative of game data, e.g. a scene format." 我感觉这