Re: No serial type
От | Christian Schröder |
---|---|
Тема | Re: No serial type |
Дата | |
Msg-id | 49234CC3.4030306@deriva.de обсуждение исходный текст |
Ответ на | Re: No serial type ("Scott Marlowe" <scott.marlowe@gmail.com>) |
Список | pgsql-general |
Scott Marlowe wrote: > Serial is a "pseudotype". It represents creating an int or bigint and > a sequence then assigning a default value for the column and setting > dependency in the db so the sequence will be dropped when the table > gets dropped. If you don't want to recreate the table, you can do > this: > > create table a (i int primary key, info text); > create sequence a_i_seq; > alter table a alter column i set default nextval('a_i_seq'); > You could even use "create sequence a_i_seq owned by a.i". This would cause the sequence to be dropped when the table is dropped which I think is the default behaviour if you create a column with type serial. Regards, Christian -- Deriva GmbH Tel.: +49 551 489500-42 Financial IT and Consulting Fax: +49 551 489500-91 Hans-Böckler-Straße 2 http://www.deriva.de D-37079 Göttingen Deriva CA Certificate: http://www.deriva.de/deriva-ca.cer
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