Re: Create on insert a unique random number - Mailing list pgsql-sql

I created the following table:

create table xyz (
n serial,
abc character varying,
constraint n_pkey primary key (n));

Each time I do an insert:

insert into xyz(abc) values('adf6');

The field n is not random but is sequential.  Is there something I
should do to make the serial number random?

Thanks,


Lance Campbell
Project Manager/Software Architect
Web Services at Public Affairs
University of Illinois
217.333.0382
http://webservices.uiuc.edu

-----Original Message-----
From: pgsql-sql-owner@postgresql.org
[mailto:pgsql-sql-owner@postgresql.org] On Behalf Of A. Kretschmer
Sent: Tuesday, March 18, 2008 11:52 AM
To: pgsql-sql@postgresql.org
Subject: Re: [SQL] Create on insert a unique random number

am  Tue, dem 18.03.2008, um  9:43:01 -0700 mailte chester c young
folgendes:
>
> > When inserting a record is there a way to have postgres create a
> > random number for a field such that it is unique?
>
>
> you could use oid

No! No oid, it's deprecated. The solution: use serial.


Andreas
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Andreas Kretschmer
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