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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-712) Support for sequences
Date Tue, 23 Jun 2009 15:24:07 GMT

    [ https://issues.apache.org/jira/browse/DERBY-712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12723107#action_12723107
] 

Rick Hillegas commented on DERBY-712:
-------------------------------------

Hi Suran,

Thanks for the revised patch with test fixes. I haven't re-run the tests with this patch but
in general the changes to the tests look good. A couple points:

o In GrantRevokeDDLTest, it looks like the name of SYSPERMS has been mis-spelled.

o There's a new println in JDBC. That may be ok but it looks like it might be a piece of debug
scaffolding which wasn't removed before the patch was generated.

Thanks!

> Support for sequences
> ---------------------
>
>                 Key: DERBY-712
>                 URL: https://issues.apache.org/jira/browse/DERBY-712
>             Project: Derby
>          Issue Type: New Feature
>          Components: SQL
>         Environment: feature request 
>            Reporter: Tony Dahbura
>            Assignee: Suran Jayathilaka
>             Fix For: 10.6.0.0
>
>         Attachments: catalogs_a.patch, catalogs_b.patch, catalogs_c.patch, SequenceGenerator.html
>
>
> Would like to see support added for sequences.  This would permit a select against the
sequence to always obtain a ever increasing/decreasing value.  The identity column works fine
but there are times for applications where the application needs to obtain the sequence number
and use it prior to the database write.  Subsequent calls to the table/column would result
in a new number on each call.
> SQL such as the following:
> SELECT NEXT VALUE FOR sequence_name FROM sometable ; would result in a next value.

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