order by:对查询结果排序
- 升序排序 asc (默认升序)
- 降序排序 desc
@Test
public void testOrderby(){
String hql="from Commodity order by price asc"; //升序
Query query=session.createQuery(hql);
List<Commodity> commodities=query.list();
for (Commodity commodity : commodities) {
System.out.println("name:"+commodity.getName());
System.out.println("price:"+commodity.getPrice());
}
}
设置多个排序规则:
@Test
public void testOrderby(){
//先按商家id升序 ;若id一致,按价格降序;若价格一致,按名称升序
String hql="from Commodity order by seller.id asc,price desc,name asc";
Query query=session.createQuery(hql);
List<Commodity> commodities=query.list();
for (Commodity commodity : commodities) {
System.out.println("name:"+commodity.getName());
System.err.println("sellerID:"+commodity.getSeller().getId()); //商家id
System.err.println("sellerName"+commodity.getSeller().getName()); //商家名称
System.out.println("price:"+commodity.getPrice());
}
}
- 部分: