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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-712) Support for sequences
Date Mon, 06 Jul 2009 19:57:14 GMT

    [ https://issues.apache.org/jira/browse/DERBY-712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12727735#action_12727735

Rick Hillegas commented on DERBY-712:

Hi Suran,

I don't think that fix is going to work. The third argument to ti.getRow() is the id of an
index, not a column position in a base row. I think that the problem is that there is no usable
index into SYSPERMS keyed on OBJECTID. I believe that you need to add such an index to SYSPERMS
and then use its id in all of the calls inside the while loop (ti.getRow(), rf.buildIndexKeyRow(),


> Support for sequences
> ---------------------
>                 Key: DERBY-712
>                 URL: https://issues.apache.org/jira/browse/DERBY-712
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>         Environment: feature request 
>            Reporter: Tony Dahbura
>            Assignee: Suran Jayathilaka
>             Fix For:
>         Attachments: altertable.diff, catalogs_a.patch, catalogs_b.patch, catalogs_c.patch,
catalogs_d.patch, catalogs_e.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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