Re: Re: Variables in Postgresql

Thanks for you answer. In that case it works fine with the sequence function. Just to handle simple values between select-statements, variables is very useful. What I have seen this is only possible in pl/pgsql and I don't want to create a function of everything.

/Tomas

----- Original Message -----
From: "Alex Pilosov" <alex(at)pilosoft(dot)com>
To: "Tomas Eriksson" <tomas(at)embryo(dot)se>
Cc: <pgsql-general(at)postgresql(dot)org>
Sent: Monday, June 11, 2001 3:31 PM
Subject: Re: [GENERAL] Variables in Postgresql

> Assuming you have table foo with a sequence foo_seq, you can do this:
> insert into foo (fields) values (....)
> insert into bar (fields) select foo_seq.currval, ....
>
>
> In other words, foo_seq.currval will always return the last value used by
> your transaction.
>
> -alex
> On Mon, 4 Jun 2001, Tomas Eriksson wrote:
>
> > Hi.
> >
> > I haven't seen any documentation about this, how do you use variables in a
> > simple way in postgresql? I want to use same sequence number in a dynamic
> > query from Perl.
> >
> > When i'm using MSSQL i can do like this in a single query
> >
> > "DECLARE @owner INT
> > INSERT maintable (fields) VALUES (...)
> > SELECT @owner = @@IDENTITY
> > INSERT subtable (fields) VALUES (@owner, ...)"
> >
> > How does I save a value and using it later in the query..?
> >
> > kind regards
> > Tomas
> >
> >
> >
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>