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Posted to dev@openjpa.apache.org by "Vera Filippova (JIRA)" <ji...@apache.org> on 2010/10/04 16:39:32 UTC
[jira] Issue Comment Edited: (OPENJPA-1794) Result of aggregate
function MAX is 0 on empty table (instead of NULL).
[ https://issues.apache.org/jira/browse/OPENJPA-1794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12910602#action_12910602 ]
Vera Filippova edited comment on OPENJPA-1794 at 10/4/10 10:38 AM:
-------------------------------------------------------------------
it's 0 for Integer field.
was (Author: oakjumper):
it's NULL for Integer field.
> Result of aggregate function MAX is 0 on empty table (instead of NULL).
> -----------------------------------------------------------------------
>
> Key: OPENJPA-1794
> URL: https://issues.apache.org/jira/browse/OPENJPA-1794
> Project: OpenJPA
> Issue Type: Bug
> Components: query
> Affects Versions: 2.0.0
> Reporter: Vera Filippova
>
> Below is a snippet of a test case... the max should be null, but is zero.
> Object count = em.createQuery("Select count(p.pk) from Entity1 p where 1=1").getSingleResult();
> Object max = em.createQuery("Select max(p.pk) from Entity1 p where 1=1").getSingleResult();
> System.out.println("count:"+count+ " max:"+max);
> > count:0 max:0
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