Re: A problem about alter table

On Wed, 8 Jan 2003, jack wrote:

> But on postgreSQL 7.2 reference manual, there is a statement for alter table
> such as, ALTER TABLE [ ONLY ] table [ * ]
>     ALTER [ COLUMN ] column { SET | DROP } NOT NULL
>
> Do you mean  this one hasn't been implemented?
>
> Jack

This syntax is valid in 7.3 (not 7.2)

>
> ----- Original Message -----
> From: "Tomasz Myrta" <jasiek@klaster.net>
> To: "jack" <datactrl@tpg.com.au>
> Cc: <pgsql-sql@postgresql.org>
> Sent: Tuesday, January 07, 2003 11:31 PM
> Subject: Re: [SQL] A problem about alter table
>
>
> > jack wrote:
> >
> > > Hi, all
> > > I'm using postgreSQL 7.2.3. The following statement always cuases a
> parser
> > > error, "parse error at or near NOT". Please adivse, thank you in
> advance.
> > >
> > > ALTER TABLE _acct_group1
> > >     ALTER groupkey  SET NOT NULL;
> > >
> > > Jack
> > >
> >  From Postgres 7.2 documentation:
> >
> > "In the current implementation of ADD COLUMN, default and NOT NULL
> > clauses for the new column are not supported. You can use the SET
> > DEFAULT form of ALTER TABLE to set the default later. (You may also want
> > to update the already existing rows to the new default value, using
> > UPDATE.)"
> >
> > There is nothing about setting not null fields.
> > I think you have to create trigger instead of altering table.
> >
> > Regards,
> > Tomasz Myrta
> >
>
>
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