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HQL的检索方式
HQL是面向持久化类的,所以需要查询表的字段都要用持久化类指定例如String hql = "SELECT e.email, e.salary, e.dept FROM Employee e WHERE e.dept = :dept"; Query query = session.cr...
分类:其他好文   时间:2014-10-10 12:03:34    阅读次数:228
Ajax学习笔记-三级联动
三个实体类Location.javapublicclassLocation{ privateIntegerlocation_id; privateStringcity; //... }Department.javapublicclassDepartment{ privateIntegerdepartment_id; privateStringdepartmentName; privateIntegerlocation_id; //... }Employee.javapublicclas..
分类:其他好文   时间:2014-10-10 02:59:44    阅读次数:250
HQL的第一个程序
使用HQL查询数据库: 分为以下几个步骤 1获取query对象 //1获取query对象 String hql="FROM Employee e where e.salary>?"; Query query=session.createQuery(hql); ...
分类:其他好文   时间:2014-10-10 00:45:31    阅读次数:208
SQL Server 创建索引的 4 种方法
前期准备: create table Employee ( ID int not null primary key, Name nvarchar(4), Credit_Card_ID varbinary(max)); --- 小心这种数据类型。 go...
分类:数据库   时间:2014-10-05 17:59:58    阅读次数:288
HDU 5038(Grade-桶排)
Grade Time Limit: 3000/1500 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others) Total Submission(s): 491    Accepted Submission(s): 263 Problem Description Ted is a employee of Alw...
分类:其他好文   时间:2014-09-25 12:09:58    阅读次数:266
Spring4学习笔记-JDBC
引入的jar包与基于注解的方式引入的jar包相同实体类Employee.java对应数据库中的employee表publicclassEmployee{ privateIntegerid; privateStringlast_name; privateStringemail; privateDepartmentdepartment; //...省略get、set方法 } Department.java对应数据库中的de..
分类:数据库   时间:2014-09-24 20:30:18    阅读次数:261
java实现跨数据库关联运算的简便方法
Java程序开发中会碰到跨数据库关联运算的情况,这里通过一个例子来看Java实现的方法。例子中sales表在db2数据库中,employee表在mysql数据库中。要将sales和employee表通过sales中的sellerid和employee中的eid关联起来,过滤出state=”California”的所有sales和employee数据。..
分类:数据库   时间:2014-09-24 17:20:08    阅读次数:647
[ACM] hdu 5038 Grade
Grade Problem Description Ted is a employee of Always Cook Mushroom (ACM). His boss Matt gives him a pack of mushrooms and ask him to grade each mushroom according to its weight. Suppose the...
分类:其他好文   时间:2014-09-22 11:32:12    阅读次数:281
HDOJ 5038 Grade
Grade Time Limit: 3000/1500 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others) Total Submission(s): 194    Accepted Submission(s): 105 Problem Description Ted is a employee of...
分类:其他好文   时间:2014-09-22 02:14:11    阅读次数:212
HDU - 5038 Grade
Problem Description Ted is a employee of Always Cook Mushroom (ACM). His boss Matt gives him a pack of mushrooms and ask him to grade each mushroom according to its weight. Suppose the weight of a mu...
分类:其他好文   时间:2014-09-22 02:09:11    阅读次数:238
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