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how to write inner join a selected table query in hibernate.ejb

I have a query working fine:
StringBuilder query = new StringBuilder(
"select o.deviceName, o.deviceOs, o.loginOn, e.username, e.name, e.idNo from LoginHistory o, User e ");
query.append(" where o.userId = e.userId");
Query q = getEm().createQuery(query.toString());
This createQuery() will go to createQuery() in class org.hibernate.ejb.AbstractEntityManagerImpl.
I want to edit the query to get the last login for each user. The following SQL query can run in a db2 command successfully:
select m1.*, m2.*
from tibs.LoginHistory m1 inner join (
select userId, max(loginOn) as loginOn from tibs.LoginHistory group by userId
) m2
on m1.userId = m2.userId and m1.loginOn = m2.loginOn;
But when I try to apply this in my code above, it will hit QuerySyntaxException: unexpected token: at ( after inner join.
Code is something like:
StringBuilder query = new StringBuilder(
"select o.deviceName, o.deviceOs, o.loginOn, e.username, e.name, e.cif, e.idNo from LoginHistory o, ECUser e ");
query.append("inner join (select o2.userId, o2.max(loginOn) as loginOn from LoginHistory group by userId) o2 ");
query.append("on o.userId = o2.userId and o.loginOn = o2.loginOn");
query.append(" where o.userId = e.userId");
Is this workable in this way? If yes, what syntax should I use?
Or does Hibernate not accept this, and I need to do it in another way?
Add on**
Even I change my query to this, still the same:
StringBuilder query = new StringBuilder(
"select o.deviceName, o.deviceOs, o.loginOn, e.username, e.name, e.cif, e.idNo from LoginHistory o, ECUser e ");
query.append("inner join (select o2.userId, o2.max(loginOn) as loginOn from LoginHistory o2 group by userId) ");
query.append("on o.userId = o2.userId and o.loginOn = o2.loginOn");
query.append(" where o.userId = e.userId");

I think the inner query should be as follows (note position of o2):
(select o2.userId, o2.max(loginOn) as loginOn from LoginHistory o2 group by userId)
Please name variables appropriately to facilitate comprehension.
It would be helpful if o2 was renamed to lh, since it represents LoginHistory entity.
(select lh.userId, lh.max(loginOn) as loginOn from LoginHistory lh group by userId)

You can use the following query:
select o.deviceName, o.deviceOs, o.loginOn, e.username, e.name, e.idNo
from LoginHistory o, User e
where o.id = (select max(lh.id) from LoginHistory lh where lh.userId = e.userId)

Spring Data JPA #Query annotation, nativeQuery = true,

I have problem with my #Repository:
#Repository
public interface RekvZmRepository extends CrudRepository<RekvalZamestn, RekvalZamestnPk> {
#Query(value = "SELECT z.* FROM rek_zm d INNER JOIN proj_a a ON d.id = a.prj_idcislo"
+ " INNER JOIN proj_e e ON a.id = e.id"
+ " INNER JOIN rekv_z z ON d.id = z.id"
+ "WHERE d.id = ?1 AND a.id = ?2 AND e.id = ?3", nativeQuery = true)
public List<RekvalZamestn> getRekvOsOnDoh(Long dhzmrk, Long prj, Long prje);
}
When I run it, result is:
org.springframework.dao.InvalidDataAccessResourceUsageException: could not
extract ResultSet; SQL [n/a]; nested exception is
org.hibernate.exception.SQLGrammarException: could not extract ResultSet
When I run SQL it works, so for me it looks like problem is not with SQL but with my #Query.

Your query, in one-line format (condensing multiple spaces to one space for reasons of, erm, space), equates to
SELECT z.* FROM rek_zm d INNER JOIN proj_a a ON d.id = a.prj_idcislo INNER JOIN proj_e e ON a.id = e.id INNER JOIN rekv_z z ON d.id = z.idWHERE d.id = ?1 AND a.id = ?2 AND e.id = ?3
If you concatenate all the strings in one line like this, it becomes obvious that you are missing a space before the WHERE clause.

change SELECT z.* FROM to SELECT z FROM assuming RekvalZamestn class maps to table rekv_z.

derby error "Subquery is only allowed to return a single column."

I got this exception when calling the method that calls this query:
SELECT s FROM Survey s
WHERE s.idsurvey NOT IN
(SELECT DISTINCT s FROM Useranswer ua
JOIN ua.iduser u
JOIN ua.idanswer a
JOIN a.idquestion q
JOIN q.idsurvey s
WHERE
ua.iduser.iduser = u.iduser
AND ua.idanswer.idanswer = a.idanswer
AND a.idquestion.idquestion = q.idquestion
AND q.idsurvey.idsurvey = s.idsurvey
AND u.iduser = :iduser
)
order by s.dateEnd
Any help?
The query seems fine.

I was trying to solve this problem for almost 2 hours.
I've found a solution using native sql.
String query = "select s.IDSURVEY, s.DATE_END from survey s where s.IDSURVEY not IN (select distinct s.IDSURVEY from survey s join question q on s.IDSURVEY = q.IDSURVEY join answer a on q.IDQUESTION = a.IDQUESTION join useranswer ua on a.IDANSWER = ua.IDANSWER where ua.IDUSER = "+iduser+") order by s.DATE_END";
return (List<Survey>)em.createNativeQuery(query).getResultList();

Can I add amounts from multiple tables in hql

I would like to perform a query in HQL similar to this in SQL:
SELECT (
SELECT COUNT(*) FROM EMPLOYER +
SELECT COUNT(*) FROM COMPANIES
)
FROM DUAL
When I add "FROM DUAL" to the query I get an error:
org.hibernate.hql.ast.QuerySyntaxException: DUAL is not mapped
And if I leave off the "FROM DUAL" I get:
org.hibernate.hql.ast.QuerySyntaxException: unexpected end of subtree
Any recommendations?

In SQL, subqueries need their own set of parentheses, so try this:
SELECT ((SELECT COUNT(*) FROM EMPLOYER) +
(SELECT COUNT(*) FROM COMPANIES)
)
If that doesn't work, resort to a from clause:
SELECT e.cnt + c.cnt
FROM (SELECT COUNT(*) as cnt FROM EMPLOYER
) e CROSS JOIN +
(SELECT COUNT(*) as cnt
FROM COMPANIES
) c

Since you didn't join the Company and Employee tables you'd better run two queries:
int companyCount = ((Number) getSession().createQuery("select count(*) from Company").uniqueResult()).intValue();
int employeeCount = ((Number) getSession().createQuery("select count(*) from Employee").uniqueResult()).intValue();
int totalCount = companyCount + employeeCount;
The (Number) is needed since PostgreSQL returns a BigInteger while HDSQLDB returns an Integer, but both are subclasses of Number.

Hibernate HQL issue expecting IDENT found "*"

I need get all data from relative table so I'm using something like this (i would use it in sql)
private static final String SELECT_OOPR_TO_SEND = "SELECT R.* " +
"FROM offerOrderProjectRel R, offerOrder O, project P " +
"WHERE P.id = R.project_id and O.id = R.offer_order_id " +
"and O.type = 'ORDER' and (P.status = 'PENDING' or P.status ='PROTECTED')" ;
;
#SuppressWarnings("unchecked")
public List<OfferOrderProjectRel> findAllOfferOrderToSendToSalesmans() {
Query q = getSession().createQuery(SELECT_OOPR_TO_SEND);
List<OfferOrderProjectRel> list = q.list();
return list;
}
After lauching this code i'm getting that error :
org.hibernate.hql.internal.ast.QuerySyntaxException: expecting IDENT,
found '**' near line 1, column 10 [SELECT R.* FROM offerOrderProjectRel
R, offerOrder O, project P WHERE P.id = R.project_id and O.id =
R.offer_order_id and O.type = 'ORDER' and (P.status = 'PENDING' or
P.status ='PROTECTED')]
So how can I obtain all data from column R with hibernate?

The method createQuery expects an HQL query string.
HQL is an object-oriented querying language.
HQL interprets SELECT R.* as select the member field * of the object R.
But * is not a member field of R. Is it?..
To select all the member fields of R use:
SELECT R
FROM offerOrderProjectRel R, offerOrder O, project P
WHERE P.id = R.project_id and O.id = R.offer_order_id
and O.type = 'ORDER' and (P.status = 'PENDING' or P.status ='PROTECTED')

you use SQL query, not hql query, so it should be
Query q = getSession().createSQLQuery(SELECT_OOPR_TO_SEND);

For people that received the "expecting IDENT found “*”" error when using org.springframework.data.jpa.repository.Query and found this question I'll add that you can change the nativeQuery flag to true:
#Query(value = "SELECT * FROM table1", nativeQuery = true)
List<Object> myFindAll();