[
https://issues.apache.org/jira/browse/DERBY-6672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14077755#comment-14077755
]
Rick Hillegas commented on DERBY-6672:
--------------------------------------
Code to verify that you can't rename a referenced table goes back to the
open-sourcing of Derby. It is in the original version of renameTable.sql (later
converted to RenameTableTest.java). So the motivation for this restriction is
not documented in Derby's code archaeology. Maybe someone from IBM can look up
the motivation for this restriction? Thanks.
> Allow Derby to rename tables referenced by foreign keys
> -------------------------------------------------------
>
> Key: DERBY-6672
> URL: https://issues.apache.org/jira/browse/DERBY-6672
> Project: Derby
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 10.10.2.0
> Reporter: Glen Mazza
> Attachments: derby-6672-01-aa-allowRenameWithConstraints.diff,
> derby-6672-01-ab-addTests.diff, docpatch2.patch
>
>
> Hi, I'm on the Apache Roller team and we use database migration scripts to
> update databases between Roller releases. (We have a common template
> (http://svn.apache.org/viewvc/roller/trunk/app/src/main/resources/sql/500-to-510-migration.vm?view=co)
> that is run through Velocity to create specific scripts for the several
> databases that we support.) One handicap with Derby that we're not seeing
> with other databases is its inability to rename tables that have FK's on
> them. Renaming one of our tables returns this error from Derby:
> rename table website to weblog;
> Error: Operation 'RENAME' cannot be performed on object 'SQL140718163851800'
> because CONSTRAINT 'WP_WEBSITEID_FK' is dependent on that object.
> SQLState: X0Y25
> ErrorCode: 30000
> Error: Operation 'RENAME' cannot be performed on object 'SQL140718163851800'
> because CONSTRAINT 'WE_WEBSITEID_FK' is dependent on that object.
> SQLState: X0Y25
> ErrorCode: 99999
> Error: Operation 'RENAME' cannot be performed on object 'SQL140718163851800'
> because CONSTRAINT 'WC_WEBSITEID_FK' is dependent on that object.
> SQLState: X0Y25
> ErrorCode: 99999
> Error: Operation 'RENAME' cannot be performed on object 'SQL140718163851800'
> because CONSTRAINT 'FO_WEBSITEID_FK' is dependent on that object.
> SQLState: X0Y25
> ErrorCode: 99999
> Error: Operation 'RENAME' cannot be performed on object 'SQL140718163851800'
> because CONSTRAINT 'MF_WEBSITEID_FK' is dependent on that object.
> SQLState: X0Y25
> ErrorCode: 99999
> Error: Operation 'RENAME' cannot be performed on object 'SQL140718163851800'
> because CONSTRAINT 'NF_WEBSITEID_FK' is dependent on that object.
> SQLState: X0Y25
> ErrorCode: 99999
> Error: Operation 'RENAME' cannot be performed on object 'SQL140718163851800'
> because CONSTRAINT 'AP_WEBSITEID_FK' is dependent on that object.
> SQLState: X0Y25
> ErrorCode: 99999
> This results in the migration scripts needing to be messy, first dropping all
> constraints before recreating them, for the one RDBMS that requires it. It
> would be great if a future release of Derby could be coded to support table
> renames regardless of the constraints defined on it. Thanks!
--
This message was sent by Atlassian JIRA
(v6.2#6252)
