|
|
Min Max Aggregate Functions
The following example shows using HQL min, max and count aggregate functions.
Refer first example for the configuration and mapping.
| |
package com.bethecoder.tutorials.hibernate.basic.tests;
import java.util.Arrays;
import org.hibernate.Session;
import com.bethecoder.tutorials.hibernate.basic.util.HibernateUtil;
public class HQLMinMaxCountTest {
/**
* @param args
*/
public static void main(String[] args) {
Session session = HibernateUtil.getSessionFactory().openSession();
session.beginTransaction();
String HQL_QUERY = "select max(projectCount), min(employeeCount), count(*) from Company comp";
Object[] row = (Object[]) session.createQuery(HQL_QUERY).uniqueResult();
System.out.println(Arrays.toString(row));
System.out.println("Max project count : " + row[0]);
System.out.println("Min Employee count : " + row[1]);
System.out.println("Company count : " + row[2]);
session.getTransaction().commit();
session.close();
}
}
|
| | |
It gives the following output,
[8478, 478, 10]
Max project count : 8478
Min Employee count : 478
Company count : 10
|
|
