Re: Problem with curval

From: "Sim Zacks" <sim(at)nospam(dot)com>
To: pgsql-odbc(at)postgresql(dot)org
Subject: Re: Problem with curval
Date: 2004-11-14 14:20:42
Message-ID: cn7pme$2eak$1@news.hub.org
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-odbc

I am using something similar to the following code in Access to get the
currval:
conn.Execute ("Insert into Shipments(...) values(...)")
rs.Open "select currval('shipments_shipmentid_seq') as shipmentid;",
conn, adOpenForwardOnly, adLockReadOnly
where rs is my ADODB.RecordSet and conn is an ADODB.Connection

In your case it looks like you're trying to build a function to mimic the
MySQL last_insert_id function.
You should not be using a loop. You only want one value.
your code should look like:

create or replace function last_insert_id(varchar,varchar ) returns integer
as
'
declare
intable alias for $1;
incolumn alias for $2;
myvalue integer;
begin
select currval('''' '' || intable || ''_'' || incolumn || ''_seq'''')
into myvalue;
return myvalue;
end
'
language plpgsql;

Your SQL code to retrieve it wsould be simply "select
last_insert_id(var1,var2)"

"Mike Fahey" <mfahey(at)enter(dot)net> wrote in message
news:419386D5(dot)9060502(at)enter(dot)net(dot)(dot)(dot)
> This wont work because myvalue must be a record or row variable.
>
> I'm guessing its nearly impossible to get the last inserted id from
> access 2003 using
> postgres odbc.
>
> select @@IDENTITY always returns "2".
>
> Thoughts?
>
>
>
>
> create function last_insert_id(varchar,varchar ) returns integer
> as '
> declare
> intable alias for $1;
> incolumn alias for $2;
> myvalue integer;
>
> BEGIN
>
> for myvalue in execute '' select currval('''' ''
> || intable || ''_'' || incolumn
> || ''_seq'''')
> '' Loop
> return myvalue;
>
>
> END loop;
> END;
>
> '
> language plpgsql;
>
>
>
> --
> With best regards,
>
> Mike Fahey - Systems Administration
> ********************************************************************
> ENTER.NET - "The Road to the Internet Starts Here!" (tm)
> (610) 437-2221 * http://www.enter.net/ * email:support(at)enter(dot)net
> ********************************************************************
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 1: subscribe and unsubscribe commands go to majordomo(at)postgresql(dot)org
>

In response to

Browse pgsql-odbc by date

  From Date Subject
Next Message Benjamin Riefenstahl 2004-11-14 15:13:03 Re: ODBC Driver stability
Previous Message Jaime Casanova 2004-11-13 23:31:27 Re: ODBC Driver stability