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From "A B (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2152) Support diagnostic vti tables that take parameters, such as SpaceTable
Date Sat, 16 Dec 2006 00:32:22 GMT
    [ http://issues.apache.org/jira/browse/DERBY-2152?page=comments#action_12458980 ] 
            
A B commented on DERBY-2152:
----------------------------

> I guess I'd thought about having separate resolution for the two different types,
> tables that map to vtis and table functions that map to vtis. 

Hmm...okay, I'll have to ponder this a bit to see if this separation is a better approach.
 I'm not quite clear on what exactly that means just yet...

> From looking at the patch I now see that the SYSCS_DIAG is not part of the 
> syntax grammar, but matches the existing use for the diagnostic tables.

Right, I think my Jira comments were misleading in that regard (sorry).  But this did prompt
me to push the relevant code further down into DataDictionary, which I think makes things
a bit cleaner.  So I'll include those changes in subsequent patches.

I'll wait another day or so before posting a followup patch (probably on Monday or Tuesday)
in case there is more discussion re: the other issues I mentioned in my previous comment.

Thank you for the quick feedback!

> Support diagnostic vti tables that take parameters, such as SpaceTable
> ----------------------------------------------------------------------
>
>                 Key: DERBY-2152
>                 URL: http://issues.apache.org/jira/browse/DERBY-2152
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Daniel John Debrunner
>         Assigned To: A B
>         Attachments: d2152_engine_v1.patch, d2152_testing_v1.patch, d2152_v1.stat
>
>
> Expand the work of DERBY-571 to support the remaining diagnostic tables that take parameters.
> Syntax would use the table constructor, like (not sure if an 'AS' clause will be required:
> select * from TABLE(SYSCS_DIAG.SPACE_TABLE(?, ?))
> Diagnostic VTIs that could be handled this way are:
> ErrorLogReader(String log file name)
> SpaceTable(String tableName)
> SpaceTable(String schemaName, String tableName)
> StatementDuration(String inputFileName)
> This is the second stage mentioned in DERBY-571

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