import java.util.Iterator; import java.util.List; import junit.framework.TestCase; import org.hibernate.Query; import org.hibernate.SQLQuery; import org.hibernate.Session; import cn.edu.ahau.mgc.hibernate.factory.HibernateSessionFactory; public class TestCount extends TestCase { public void test2() { Session session = null; try { session = HibernateSessionFactory.getSession(); List<Object[]> results = session.createQuery("select c.id,c.name,count(s) from Student s join s.classes c group by c.id, c.name").list(); for (Iterator<Object[]> iterator = results.iterator(); iterator.hasNext();) { Object[] result = iterator.next(); Long countLong=(Long)result[2];//需转为long对象 Integer count=Integer.parseInt(countLong.toString()); System.out.println("----ID:" + result[0] + ";Name:" + result[1] + "Students Count:" + count); } } catch (Exception e) { e.printStackTrace(); } finally { HibernateSessionFactory.closeSession(); } } }
Hibernate中HQL的统计查询
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转载自xixian.iteye.com/blog/1071525
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