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 Post subject: CASE statement not supported in SQL count function?
PostPosted: Wed Nov 19, 2008 7:51 pm 
Newbie

Joined: Wed Aug 24, 2005 1:43 pm
Posts: 10
Good evening,
I need to execute a query using something like (SQL is obviously simplified a lot to focus on issue - I need count(distinct CASE..) combo)

select count(distinct (CASE WHEN obj.id < 1000 then 1 else null) )
from object obj

Stack trace is below.

The equivalent runs fine in SQL as aggregate functions support case statement.
select count(distinct (CASE WHEN ID < 1000 THEN 1 ELSE 0 END))
from TABLE

This looks like a bug in the parser?

Thanks,
Seb


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Hibernate version:
3.2.6

Mapping documents:
N/A

Code between sessionFactory.openSession() and session.close():
N/A

Full stack trace of any exception that occurs:
18:38:52,841 ERROR PARSER:33 - line 1:23: unexpected token: (
18:38:52,857 ERROR PARSER:33 - line 1:29: unexpected token: WHEN
18:38:52,857 ERROR PARSER:33 - line 1:61: unexpected token: THEN
Exception in thread "main" org.hibernate.hql.ast.QuerySyntaxException: unexpected token: ( near line 1, column 23 XXXX
at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:31)
at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:24)
at org.hibernate.hql.ast.ErrorCounter.throwQueryException(ErrorCounter.java:59)
at org.hibernate.hql.ast.QueryTranslatorImpl.parse(QueryTranslatorImpl.java:258)
at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:157)
at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:111)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:77)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:56)
at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:72)
at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:133)
at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:112)
at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1623)

Name and version of the database you are using:
Sybase 12.5

The generated SQL (show_sql=true):
Failed

Debug level Hibernate log excerpt:


Problems with Session and transaction handling?

Read this: http://hibernate.org/42.html


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 Post subject:
PostPosted: Wed Nov 19, 2008 11:38 pm 
Regular
Regular

Joined: Tue Sep 26, 2006 11:37 am
Posts: 115
Location: Sacramento, CA
Use session.createSQLQuery() and then query.setEntity() when you need to use SQL code that has no HQL equivalent.


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