Sequence (related) Problem

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Sequence (related) Problem

От:
"Ron St.Pierre" <rstpierre@syscor.com>
Дата:
I am migrating a DB from Access to postgreSQL and am making quite a few 
changes to it including renaming tables, columns, sequences, etc.

I am renaming TBLOLD to TBLNEW and consequently need to rename the 
sequence from TBLOLD_ID_SEQ to TBLNEW_ID_SEQ. I also want it to START at 
a value just above TBLOLD's last value. To set the start value of the 
new sequence I am trying:

     CREATE SEQUENCE 'tblnew_id_seq' start nextval('tblold_id_deq') 
increment 1 maxvalue 2147483647 minvalue 1  cache 1 ;
as well as many variations of the above (including using SELECT to get 
the nextval).

Could someone please point me to a solution?

Thanks

-- 
Ron St.Pierre
Syscor R&D
tel: 250-361-1681
email: rstpierre@syscor.com

Re: Sequence (related) Problem

От:
Neil Conway <neilc@samurai.com>
Дата:
On Wed, 2002-11-27 at 16:38, Ron St.Pierre wrote:
> To set the start value of the new sequence I am trying:
> 
>      CREATE SEQUENCE 'tblnew_id_seq' start nextval('tblold_id_deq') 
> increment 1 maxvalue 2147483647 minvalue 1  cache 1 ;

Execute the CREATE SEQUENCE with the default start value, and then set
it to whatever you like using:

SELECT setval('my_seq', nextval('abc') + ...);

Cheers,

Neil
-- 
Neil Conway  || PGP Key ID: DB3C29FC
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