I'm using Hibernate 3.2.6 and I'm attempting to make a query like so:
select
a,
(select min(date) as someAlias from B b where a.id = b.id)
from A a
where someAlias is not null and someAlias between :start and :end
Imagine that this query makes sense in the context that I'm operating in. When I run this query, I get an error saying "Unknown column 'someAlias' in 'where clause'". When I show the SQL output, I see that SQL doesn't seem to include the 'as someAlias' part of the query.
Is this just unsupported, or am I missing something? Or this just a feature not supported in version of Hibernate?
Translate the query to native sql and fire it on db, it will not work.It is not a valid query because aliases in select clause will not be visible in where clause.
Aliases are supported in HQL.
Related
I have Spring boot, Hibernate, and SQL Server.
We use Native queries and they very big, so I can't rewrite it in JPQL or HQL
I need somehow to make Sort order dynamic, I have query similar to:
select * from (select 1 as id, 'Max' as name
union
select 2 as id, 'Mike' as name) as a
order by a.id :sortOrder
:sortOrder hibernate change to ? so I'm getting 'order by a.id ?'
:sortOrder should be ask or desc, but I'm getting an error:
com.microsoft.sqlserver.jdbc.SQLServerException: Incorrect syntax near '#P1'
How to make sort order dynamic?
I am facing problem of executing the following query in java using hibernate for postgres tables.
The query is made up to retrive the data from 3 tables using Inner Joins.
Query :
QryJourney = "SELECT journey.id , journey.operatingday, journey.linename, journey.scheduledeparture, journey.scheduledeparturestopname, journeydetail.stopname , journeydetail.latitude, journeydetail.longitude FROM journey left join journey_journeydetail ON journey.id = journey_journeydetail.journey_id left JOIN journeydetail ON journey_journeydetail.journeydetails_id = journeydetail.id WHERE journey.id = '155815228' ORDER BY journeydetail.schedulearrival";
as soon as it executes, following exception occured.
Exception :
Exception in thread "main" org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected token: ON near line 1, column 268 [SELECT journey.id , journey.operatingday, journey.linename, journey.scheduledeparture, journey.scheduledeparturestopname, journeydetail.stopname , journeydetail.latitude, journeydetail.longitude FROM de.db.journeyTracker.model.journey left join journey_journeydetail ON journey.id = journey_journeydetail.journey_id left JOIN journeydetail ON journey_journeydetail.journeydetails_id = journeydetail.id WHERE journey.id = '155815228' ORDER BY journeydetail.schedulearrival]
Tis query works 100% fine at postgres while executing on its SQL Pane.
Anybody having any idea?
Regards
Usman
Hibernate queries are written in Hibernate Query Language (HQL) not in native SQL. Rephrase your query in HQL or use a native query to use SQL with Hibernate.
Hibernate is an object-relational mapper. It won't just give you a result set. If you want that, use JDBC directly, using PgJDBC.
If you want native domain objects as query results, use Hibernate with HQL or via a native query mapping. Native queries are fiddlier becuse you have to explicitly tell Hibernate how all the result columns map to your result objects.
I am trying to execute an hql query with aliases
select **clbs.id as id**
from ClaimDO cl, ClaimBillSummaryDO clbs, HospitalDO h
where clbs.parentGuidObj.id=cl.id and h.id=cl.hospitalSeq and cl.id= '10721'
and I get the following error
org.hibernate.QueryException: , expected in SELECT
However the query runs without error if i remove the alias
select **clbs.id**
from ClaimDO cl, ClaimBillSummaryDO clbs, HospitalDO h
where clbs.parentGuidObj.id=cl.id and h.id=cl.hospitalSeq and cl.id= '10721'
Why are you not using mappings to join your entities? You might as well use native queries to do this. HQL would look more like the following. I have omitted the HospitalDO join since it doesn't look meaningful.
select clbs.id from ClaimDO cl join cl.parentGuidObj clbs where cl.id = :id
I am trying to get distinct values from table application based on the column entry_id. I've managed to get this working with plain SQL:
SELECT DISTINCT ON (a.entry_id) a.* FROM application AS a
JOIN entry AS e ON e.id = a.entry_id
WHERE e.valid_until BETWEEN ? AND ?;
The problem is, I have to translate it to HQL. Is there any way to resolve it in HQL without Criteria API?
It looks like this feature has been requested a long time ago but is still unresolved.
I am trying to write query with multiple select subnets in it.But I defined a nativequery
I am giving error. Compiler specifies that "(" after "from" is not proper. How can I define
a native query in JPA 2.0
For eaxmple:
SELECT *
from (SELECT ****C) REI3 where column1 != 1
GROUP BY REI3.column2 order by REI3.column3 ASC
JPA does not have too much to do with validating SQL syntax, query is passed to JDBC driver. Likely you are trying run query such a way, that it is interpreted as JP QL. Instead try following method to execute it as
Query q = em.createNativeQuery("Your SQL here");
Other alternative is to use NamedNativeQuery Example