openjpa-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Vera Filippova (JIRA)" <j...@apache.org>
Subject [jira] Commented: (OPENJPA-1794) Result of aggregate function MAX is 0 on empty table (instead of NULL).
Date Fri, 17 Sep 2010 14:19:32 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-1794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12910602#action_12910602
] 

Vera Filippova commented on OPENJPA-1794:
-----------------------------------------

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

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message