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...
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其他好文 时间:
2014-10-10 12:03:34
阅读次数:
228
三个实体类Location.javapublicclassLocation{
privateIntegerlocation_id;
privateStringcity;
//...
}Department.javapublicclassDepartment{
privateIntegerdepartment_id;
privateStringdepartmentName;
privateIntegerlocation_id;
//...
}Employee.javapublicclas..
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其他好文 时间:
2014-10-10 02:59:44
阅读次数:
250
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); ...
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其他好文 时间:
2014-10-10 00:45:31
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208
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...
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数据库 时间:
2014-10-05 17:59:58
阅读次数:
288
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...
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其他好文 时间:
2014-09-25 12:09:58
阅读次数:
266
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..
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数据库 时间:
2014-09-24 20:30:18
阅读次数:
261
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。..
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数据库 时间:
2014-09-24 17:20:08
阅读次数:
647
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...
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其他好文 时间:
2014-09-22 11:32:12
阅读次数:
281
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...
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其他好文 时间:
2014-09-22 02:14:11
阅读次数:
212
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...
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其他好文 时间:
2014-09-22 02:09:11
阅读次数:
238