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How can I implement Select and Count in Hibernate using criteria

I'm new using hibernate, I have query like :
select count(1) from (
SELECT COUNT (1)
FROM USR_BASE
WHERE ST_CD = 1
group by USR_NO)
How can I implement that query in Hibernate using criteria ?
Because, I already implement with method :
public int totalUser(UsrBase usrBase) {
Criteria criteria = createCriteria();
String stCd = usrBase.getStCd();
criteria.setProjection(Projections.projectionList())
.add(Projections.property("usrNo"))
.add(Projections.property(stCd))
.add(Projections.groupProperty("usrNo")));
return((Long)criteria.setProjection(Projections.rowCount()).uniqueResult()).intValue();
}
the result not same with my query... Please help me.

select count(1) from (
SELECT COUNT (1)
FROM USR_BASE
WHERE ST_CD = 1
group by USR_NO)
I think it will be more easily with
select count(distinct(USR_NO)) from USR_BASE WHERE ST_CD = 1

Hibernate Subqueries

I have a situation where I need to convert a query like :-
select hostname, avg(cpu_utilization_percentage) from cpu_utilization where timestamp In (select distinct(timestamp) from report.cpu_utilization order by timestamp desc limit 6) group by hostname
Now, this data I want to fetch using hibernate so I have used Subqueries:-
// For inner Query
DetachedCriteria subquery = DetachedCriteria.forClass(CpuUtilizationDTO.class);
subquery.setProjection(Projections.distinct(Projections.property("timeStamp"))).addOrder(Order.desc("timeStamp"));
subquery.getExecutableCriteria(session).setMaxResults(6);
// For Outer Query
Criteria query = session.createCriteria(CpuUtilizationDTO.class);
ProjectionList list = Projections.projectionList();
list.add(Projections.groupProperty("hostName"));
list.add(Projections.avg("cpuUtilizationpercentage"));
query.setProjection(list);
List<Object[]> obj= (List<Object[]>)hibernateTemplate.findByCriteria(query);ction(list);
//Now to add subquery into main query I am using
query.add(Subqueries.propertyIn("timeStamp", subquery));
But everytime I am getting the average of entire data. Can anyone please help that where did I miss?

Inner join query on Hibernate - SQL queries do not currently support iteration

I'm new to hibernate and I've this SQL query which works perfectly
SELECT count(*) as posti_disponibili from occupazione t inner join
(select id_posto_park, max(date_time) as MaxDate from occupazione
group by id_posto_park) tm on t.id_posto_park = tm.id_posto_park and
t.date_time = tm.Maxdate and t.isOccupied = 0
which gives me all the last items with isOccupied = 0
I was porting it into Hibernate, I've tried to use
result = ( (Integer) session.createSQLQuery(query).iterate().next() ).intValue()
to return posti_disponibili but i got this exception
java.lang.UnsupportedOperationException: SQL queries do not currently support iteration
How can i solve this? I cannot find the equivalent HQL query
Thank you

I would suggest you to use
Query#uniqueResult()
which will give you single result.
select count(*) .....
will always return you a single result.

Hibernate support it's own iterator-like scroll:
String sqlQuery = "select a, b, c from someTable";
ScrollableResults scroll = getSession().createSQLQuery(sqlQuery).scroll(ScrollMode.FORWARD_ONLY);
while (scroll.next()) {
Object[] row = scroll.get();
//process row columns
}
scroll.close();

How to Count the rows in Hibernate Query Language?

I am trying to get just the count of the rows returned rather than all the results from the table.
I saw that this can be done like this:
( (Integer) session.createQuery("select count(*) from ....").iterate().next() ).intValue()
But when trying to store this query in an integer format(it says cannot convert from Query to Integer)
I am using a dynamic query where the values will be mentioned below the query like this
theQuery = "select count(*) from THM as thm " +
"join thm.TMC as tmc " +
"join tmc.TIMCC as timcc " +
"where thm.Qid = :Qid and thm.Cv = :Cv and timcc.Did = :Did and timcc.Cv= :Cv";
Query query = session.createQuery(theQuery);
query.setInteger("Qid", Integer.parseInt(Qid));
query.setInteger("Did", Did);
query.setInteger("Cv",cV);
Now, how can i get a count of all the rows returned by using Hibernate query in a variable without using list.size but directly from the query?

Have you tried the query.uniqueResult(); ? As your Select count(*) will give you only one number, you should be able to retrieve it with this like int count = (Integer)query.uniqueResult();
To count based on a Criteria you can do this:
Criteria criteria = currentSession().createCriteria(type);
criteria.setProjection(Projections.rowCount());
criteria.uniqueResult();
I'm using the Criteria right now so I know for sure that it works. I saw the uniqueResult() solution on a website here: http://www.jroller.com/RickHigh/entry/hibernate_pagination_jsf_datagrid_prototype1

you can do this
long count = (long)session.createQuery("SELECT COUNT(e) FROM Employees e").getSingleResult();

Try it.
Long count = ((Long) session.createQuery("select count(*) from Book").uniqueResult());
Integer totalBooks = count.intValue();

Work for me
int list=(int)
sessionFactory.getCurrentSession().createSQLQuery("select count(*) as count from
Book").addScalar("count",IntegerType.INSTANCE).uniqueResult();

HIbernate query

I want to execute a query using hibernate where the requirment is like
select * from user where regionname=''
that is select all the users from user where region name is some data
How to write this in hibernate
The below code is giving result appropraitely
Criteria crit= HibernateUtil.getSession().createCriteria(User.class);
crit.add(Restrictions.eq("regionName", regionName));

Well as you alaready said you can either use the Criteria API or create a HQL query:
// Criteria
List<User> users = HibernateUtil.getSession().createCriteria(User.class);
crit.add(Restrictions.eq("regionName", regionName)).list();
// HQL
String query = "SELECT FROM User WHERE regionName = :region";
List<User> users = HibernateUtil.getSession().createQuery(query).setString("region", regionName).list();

String hql = "SELECT u FROM User u WHERE regionName=:regionName";
Query q = session.createQuery(hql);
q.setParameter("regionName", regionName);
List result = q.list();