Re: [ADMIN] Copying data from table to table (cloned tables)
От | Fourat Zouari |
---|---|
Тема | Re: [ADMIN] Copying data from table to table (cloned tables) |
Дата | |
Msg-id | 621eda8a0610110430y5be06e22t27d6c99991e86dc8@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: [ADMIN] Copying data from table to table (cloned tables) ("Jim C. Nasby" <jim@nasby.net>) |
Ответы |
Re: [ADMIN] Copying data from table to table (cloned tables)
Re: [ADMIN] Copying data from table to table (cloned tables) |
Список | pgsql-novice |
what's the benefits using a serialized trans ?
On 10/10/06, Jim C. Nasby <jim@nasby.net> wrote:
On Tue, Oct 10, 2006 at 10:24:57AM -0500, Jim C. Nasby wrote:
> > If you just want to copy the data across to the other table:
> > begin;
> > insert into table2 select * from table1 where <some criteria>;
> > commit;
> >
> > if you also want to remove that same data from table1:
> > begin;
> > insert into table2 select * from table1 where <some criteria>;
> > delete from table1 where <same criteria as above>;
> > commit;
I forgot to mention you could also use a serializable transaction with
your method...
BEGIN ISOLATION LEVEL SERIALIZABLE;
INSERT ...
DELETE ...
COMMIT;
Just remember you'll need to deal with the possibility of a 'could not
serialize' error.
--
Jim Nasby jim@nasby.net
EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)
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