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
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