JPQL and date comparison (constraint in the query)

问题

My Application model object contains a date field (time stamp):

@Entity
@Table(name = "MYTABLE")
public class Application {

   private Date timeStamp;
   ...
}

I'm trying to construct a JPQL query that would select all applications that were changed today (i.e. their time stamp was changed anytime today). What is the best way to do this?

回答1:

There is no perfect way with standard JPQL, JPQL doesn't provide Date arithmetic functions. But your provider might provide extensions (e.g. Hibernate and EclipseLink do). Or use a native SQL.

来源：https://stackoverflow.com/questions/4105946/jpql-and-date-comparison-constraint-in-the-query