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From "A B (JIRA)" <derby-...@db.apache.org>
Subject [jira] Updated: (DERBY-1633) Regression: The fields of views are not being calculated properly since 10.1.2.4
Date Mon, 07 Aug 2006 17:49:14 GMT
     [ http://issues.apache.org/jira/browse/DERBY-1633?page=all ]

A B updated DERBY-1633:
-----------------------

    Attachment: DERBY-1633_v1.html
                d1633_v1_reviewOnly.patch

Attaching a detailed description of the issue that is causing this regression, and a description
of what I believe to be the correct fix.  I'm also attaching a first version of the patch
that is for review only.

The reason the patch is for review only is that it does not yet have new test cases for catching
this regression in the future, and more importantly, because there are some changes in the
patch about which I am not very clear.  So I'm hoping someone out there who's familiar with
predicate "remapping" can provide some input to help clarify some things for me.  A description
of what I don't yet understand is provided in section V of the document.

I plan to continue looking at this issue to try to finalize my understanding of the changes,
but in the meantime, other comments/reviews would be helpful.

The description of the problem, the fix, and my continuing questions can be found in DERBY-1633_v1.html;
the first patch (for review only) is d1633_v1_reviewOnly.patch.

> Regression: The fields of views are not being calculated properly since 10.1.2.4
> --------------------------------------------------------------------------------
>
>                 Key: DERBY-1633
>                 URL: http://issues.apache.org/jira/browse/DERBY-1633
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.1.3.0, 10.1.3.1
>         Environment: 2.8 GHZ dual PIV on Windows XP SP2, 2 GB memory
>            Reporter: Prasenjit Sarkar
>         Assigned To: A B
>         Attachments: d1633_repro.sql, d1633_v1_reviewOnly.patch, DERBY-1633_v1.html
>
>
> Database can be assumed to be same as in Derby - 1205 Jira issue
> SELECT PORT1.PORT_ID FROM T_RES_PORT PORT1, T_VIEW_ENTITY2PORT ENTITY2PORT WHERE ENTITY2PORT.PORT_ID
= PORT1.PORT_ID
> This works fine in 10.1.2.1 but fails thereafter complaining that Comparison between
INTEGER and CHAR is not supported
> for some reason, it thinks one of the PORT_ID columns is a character, when in reality
both are integers.
> 		SELECT DISTINCT 
> 		    ZONE.ZONE_ID ZONE_ID, 
> 			 PORT2ZONE.ZONE_MEMBER_ID  
> 		FROM  
> 			 T_RES_ZONE ZONE left outer join T_VIEW_PORT2ZONE PORT2ZONE on  
> 			 ZONE.ZONE_ID = PORT2ZONE.ZONE_ID   ,  T_RES_FABRIC FABRIC 
> In this query, it is complaining that one of the columns is a VARCHAR and cannot be compared
to INTEGER, when clearly this is not the case...
> Same issue

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