Sorry I have misunderstood your question. I automatically creates primary
(it is more than unique) INDEX.
I include an example from Postgres Users Manual - CREATE SERIAL section:
CREATE SEQUENCE serial START 101;
Select the next number from this sequence
SELECT NEXTVAL ('serial');
nextval
------- 114
Use this sequence in an INSERT:
INSERT INTO distributors VALUES (NEXTVAL('serial'),'nothing');
Set the sequence value after a COPY FROM:
CREATE FUNCTION distributors_id_max() RETURNS INT4 AS 'SELECT max(id) FROM distributors' LANGUAGE 'sql';
BEGIN; COPY distributors FROM 'input_file'; SELECT setval('serial', distributors_id_max()); END;
I hope it wiull help.
Regards,
Andrzej Mazurkiewicz
andrzej@mazurkiewicz.org
www.mazurkiewicz.org
> -----Original Message-----
> From: Antonio W. Lagnada [SMTP:alagnada@lsil.com]
> Sent: 7 marca 2000 16:05
> To: Andrzej Mazurkiewicz
> Cc: Pgsql-sql
> Subject: Re: [SQL] Autogenerated Unique Index
>
> Hi Andrzej,
>
> Does this mean that everytime I create a new record on the table, the
> field
> "B" will be automatically incremented?
>
> - Antonio
>
> Andrzej Mazurkiewicz wrote:
>
> > cfmg_adm=> CREATE TABLE A (
> > cfmg_adm(> B int NOT NULL,
> > cfmg_adm(> C char(5),
> > cfmg_adm(> PRIMARY KEY (B)
> > cfmg_adm(> );
> > NOTICE: CREATE TABLE/PRIMARY KEY will create implicit index 'a_pkey'
> for
> > table
> > 'a'
> > CREATE
> > cfmg_adm=>
> > Regards,
> > Andrzej Mazurkiewicz
> >
> > > -----Original Message-----
> > > From: Antonio W. Lagnada [SMTP:alagnada@lsil.com]
> > > Sent: 7 marca 2000 14:41
> > > To: Pgsql-sql
> > > Subject: [SQL] Autogenerated Unique Index
> > >
> > > Can someone give me a step-by-step instructions on how to generate a
> > > unique autogenerated index in PostgreSQL?
> > >
> > > --
> > > Antonio W. Lagnada
> > >
> > >
> > > 952.921.8533
> > > alagnada@lsil.com_NOSPAM
> > > Remove the _NOSPAM for
> > > the actual email address
> > > << File: Card for Antonio W. Lagnada >>
>
> --
> Antonio W. Lagnada
>
> 952.921.8533
> alagnada@lsil.com_NOSPAM
> Remove the _NOSPAM for
> the actual email address
> << File: Card for Antonio W. Lagnada >>
