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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-712) Support for sequences
Date Mon, 01 Feb 2010 19:02:20 GMT

    [ https://issues.apache.org/jira/browse/DERBY-712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12828225#action_12828225
] 

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

Thanks again for the patch, Suran. I have committed it at subversion revision 905369. Along
the way I also updated the canons for dblook_test and dblook_test_territory since this patch
changes the results slightly. Thanks!

> 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: 10.6.0.0
>
>         Attachments: altertable.diff, catalogs_a.patch, catalogs_b.patch, catalogs_c.patch,
catalogs_d.patch, catalogs_e.patch, catalogs_f.patch, catalogs_f_2.patch, catalogs_g.diff,
catalogs_h.diff, create_drop_sequence_a.patch, create_drop_sequence_b.patch, create_drop_sequence_c.patch,
create_drop_sequence_d.patch, create_sequence_a.patch, createseq_args_bind_a.diff, createseq_args_bind_b.diff,
derby-712-02-aa-privilegeNodeCleanup.diff, derby-712-03-aa-usagePrivilege.diff, derby-712-03-ac-usagePrivilege.diff,
derby-712-04-aa-dblook.diff, derby-712-05-af-sequenceGenerator.diff, SequenceGenerator.html,
sequences_next_value_a.patch
>
>
> 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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