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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Closed: (DERBY-4430) Make ij's SHOW and DESCRIBE commands more db agnostic
Date Sat, 14 Nov 2009 22:34:39 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4430?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Knut Anders Hatlen closed DERBY-4430.
-------------------------------------

       Resolution: Fixed
    Fix Version/s: 10.6.0.0

All the tests ran cleanly in my environment. Committed revision 836277.

Thanks for working on this, Sylvain!

> Make ij's SHOW and DESCRIBE commands more db agnostic
> -----------------------------------------------------
>
>                 Key: DERBY-4430
>                 URL: https://issues.apache.org/jira/browse/DERBY-4430
>             Project: Derby
>          Issue Type: Improvement
>          Components: Tools
>    Affects Versions: 10.6.0.0
>            Reporter: Knut Anders Hatlen
>            Assignee: Sylvain Leroux
>            Priority: Minor
>             Fix For: 10.6.0.0
>
>         Attachments: DERBY-4430.ij.out, DERBY-4430.patch, DERBY-4430.sql
>
>
> ij's SHOW and DESCRIBE commands use DatabaseMetaData in order to be portable to other
databases than Derby, and in many cases they work fine with other databases. However, the
variants of the commands that take a table name or a schema name assume that unquoted identifiers
are converted to and stored in upper case internally. This is not true for all databases,
and since these commands don't accept quoted identifiers, there's currently no way to access
tables/schemas that are not all upper case.
> One possible fix is to make the identifier() method in ij.jj use the DatabaseMetaData
methods storesLowerCaseIdentifiers(), storesMixedCaseIdentifiers() and storesUpperCaseIdentifiers()
to decide whether it should convert the identifier to lower case, keep it unchanged, or convert
it to upper case. Currently, that method always converts the identifiers to upper case.

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