can we group by day of the week using hibernate?

问题

I want the query results to be grouped by day of the week .. like into 7 groups Monday, Tuesday, Wednesday... etc one for each

the column in the table is a timestamp field like 12-Mar-2011 ..... so I don't care which dates exist in the table I just need to get 7 groupings and if there is a count column which doesnt exist for like thursday it should return 0 and for wednesday the count should the total counts for all wednesday and like wise for each day of the week.

How do I mplement this query with HQL/criteria?

Is there a built in clause like this that I can use in Hibernate (HQL/Criteria)?

Thanks in advance.

回答1:

Try this one:

select dayofweek(dateField), count(*)
from PersistentClass
group by 1

回答2:

Did you try 'order by' clause?

Smth like this:

FROM tableName as table
ORDER BY table.dayOfWeek ASC

In what form you store your data?

来源：https://stackoverflow.com/questions/10222370/can-we-group-by-day-of-the-week-using-hibernate