From: | Richard Huxton <dev(at)archonet(dot)com> |
---|---|
To: | abief_ag_-postgresql(at)yahoo(dot)com |
Cc: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: session_id |
Date: | 2004-11-17 13:49:00 |
Message-ID: | 419B56CC.8090703@archonet.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-sql |
Riccardo G. Facchini wrote:
> hi all,
>
> is there a way to determine the session id on a database session?
>
> I would need to have a unique number whenever a session is started, and
> have this available as a function or view result.
Add a new sequence to your database:
CREATE SEQUENCE my_session_id;
Then, at the start of every session:
SELECT nextval('my_session_id');
and whenever you need the value:
SELECT currval('my_session_id');
Sequences are concurrency-safe, so you're OK with multiple clients. They
return INT8 values, so you should be good for unique numbers for a while.
The only thing is, you need to remember to call nextval() every time you
connect.
HTH
--
Richard Huxton
Archonet Ltd
From | Date | Subject | |
---|---|---|---|
Next Message | Riccardo G. Facchini | 2004-11-17 14:25:25 | Re: session_id |
Previous Message | Riccardo G. Facchini | 2004-11-17 13:13:43 | session_id |