Обсуждение: alter integer field to serial integer primary key

I have an integer field of unique, consecutive numbers. Can I change
this to be a serial, primary key field using an ALTER TABLE ALTER
COLUMN command? I haven't been able to stumble over it.

thanks,

r

On Friday 29 September 2006 09:51 am, rloefgren@forethought.net wrote:
> I have an integer field of unique, consecutive numbers. Can I change
> this to be a serial, primary key field using an ALTER TABLE ALTER
> COLUMN command? I haven't been able to stumble over it.
>
> thanks,
>
> r
>
>
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I think the easiest way would be to use CREATE SEQUENCE to create a sequence
with a start value above that of max(integer field) and then use ALTER TABLE
to set the nextval(sequence) as the DEFAULT value.
--
Adrian Klaver
aklaver@comcast.net