I have 3 columns in my table id, uid and value. I want to sum the values of each uid. I know the query but i want to use criteria.
Query:
SELECT uid,SUM(value) FROM post GROUP BY uid;
How can i use this in hibernate criteria?
例如:
SELECT uid,SUM(value) FROM post GROUP BY uid HAVING SUM(value) > 100;
You can do it like this.
Criteria cr = session.createCriteria(Post.class); cr.setProjection(Projections.sum("value")); cr.setProjection(Projections.groupProperty("uid"));
amount and employee is column name to use using ProjectionsList:- 列名称:-
Criteria criteria=sessionFactory.getCurrentSession().createCriteria(EmpAdvance.class);
ProjectionList projectionList=Projections.projectionList();
projectionList.add(Projections.sum("amount"));
projectionList.add(Projections.groupProperty("employee"));
criteria.setProjection(projectionList);
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