[jira] Commented: (DERBY-7) Bug in NULLIF Function

["Satheesh Bandaram (JIRA)" <de...@db.apache.org>]

     [ http://issues.apache.org/jira/browse/DERBY-7?page=comments#action_57487 ]
     
Satheesh Bandaram commented on DERBY-7:
---------------------------------------

Is anyone concerned that the proposed patch also accepts this:

ij> values (case when 1=2 then 5 else '6' end);
1
-----------
6

I think it shouldn't. I have a feeling we are not confirming to SQL standard (ISO/IEC 9075-2:2003) 9.3 section, 'Data types of results of aggregations' here.

Satheesh


> Bug in NULLIF Function
> ----------------------
>
>          Key: DERBY-7
>          URL: http://issues.apache.org/jira/browse/DERBY-7
>      Project: Derby
>         Type: Bug
>   Components: SQL
>     Versions: 10.0.2.0
>     Reporter: Tulika Agrawal
>     Priority: Minor
>  Attachments: Derby-7.txt
>
> Reporting for Christian d'Heureuse, filed on derby-dev list.
> The NULLIF built-in function of Cloudscape 10.0.1.0 beta seems to accept
> only string values.
> Examples:
>  values nullif('a','b');
>  --> OK
>  values nullif(1,2);
>  --> Error message: "ERROR 42X89: Types 'CHAR' and
>      'INTEGER' are not type compatible. (Neither type
>      is assignable to the other type.)"

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