每月休眠计划组

Question

I am Hibernate newbie and i have a working sql query which i try to re-write with Hibernate projections and restrictions. Everything is fine but when i want to group by my time_stamp column in YYYY-MM format i could not make it

How do i use sqlGroupProjection of Hibernate for below GROUP BY clause

group by to_char(view_date, 'YYYY-MM')

Any help would be appreciated

Answer 1

Criteria criteria = session.createCriteria(YourClaassName.class);
        criteria.setProjection(Projections.projectionList()
                        .add(Projections.groupProperty("time_stamp")));