JPQL使用日期时间的日期部分查询实体的java.util.Date字段

Question

I have an entity with a date field (java.util.Date). Normally the date is saved as for example 2012-10-19 21:29:03.000 . My database is MySQL.

Now I need to query the database, through JPQL, using strictly the date portion, ie, 2012-10-19 . How would I do that?

Answer 1

That can be done by giving TemporalType when setting parameter:

Date param ...
Query q = em.createQuery("SELECT a FROM EntityA a WHERE a.someDate > :param");
q.setParameter("param", param, TemporalType.DATE);