Hibernate distinct method: set the uniqueness of query results
•
Java
distinct(Projection proj)
Example
Criteria criteria = session.createCriteria(UserForm.class); //获取Criteria对象
criteria.setProjection(Projections.distinct(Projections.property("username"))); //定义去掉重复值查询
Iterator it = criteria.list().iterator(); //获取查询结果迭代器
while(it.hasNext()){ //循环遍历查询结果
System.out.println("用户名:"+it.next());
}
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