Thread: PL/PGSQL question on transactions

Can you imbed BEGIN; and COMMIT; statements in the body of a pl/pgsql 
function?

I am getting a parse error upon execution when I try it.

Code:

CREATE FUNCTION chitadj(integer,integer) RETURNS integer AS '
DECLARE result integer; oldamount integer;
BEGIN   BEGIN;   SELECT INTO oldamount chits FROM avatar   WHERE avatar_id = $1;
   IF oldamount IS NULL THEN     RETURN -1;   END IF;
   IF ((oldamount < abs($2)) AND ($2 < 0)) THEN     RETURN -2;   END IF;
   result := oldamount + $2;   RETURN result;   COMMIT;
END;
' language 'plpgsql';



-------------------------
Dan

_________________________________________________________________
Join the world�s largest e-mail service with MSN Hotmail. 
http://www.hotmail.com

No - a function implicity runs in a transaction anyway.

Chris

On Fri, 12 Apr 2002, Dan Schwitalla wrote:

> Can you imbed BEGIN; and COMMIT; statements in the body of a pl/pgsql
> function?
>
> I am getting a parse error upon execution when I try it.
>
> Code:
>
> CREATE FUNCTION chitadj(integer,integer) RETURNS integer AS '
> DECLARE
>   result integer;
>   oldamount integer;
> BEGIN
>     BEGIN;
>     SELECT INTO oldamount chits FROM avatar
>     WHERE avatar_id = $1;
>
>     IF oldamount IS NULL THEN
>       RETURN -1;
>     END IF;
>
>     IF ((oldamount < abs($2)) AND ($2 < 0)) THEN
>       RETURN -2;
>     END IF;
>
>     result := oldamount + $2;
>     RETURN result;
>     COMMIT;
> END;
> ' language 'plpgsql';
>
>
>
> -------------------------
> Dan
>
> _________________________________________________________________
> Join the world�s largest e-mail service with MSN Hotmail.
> http://www.hotmail.com
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 6: Have you searched our list archives?
>
> http://archives.postgresql.org
>

Nope.

As my understanding, in a PL/pgSQL function, all statements are in ONE
transaction,
you do not need another pair of begin/end. If transaction failed, it abort
whole
thing anyway.



Jie Liang

-----Original Message-----
From: Dan Schwitalla [mailto:acadrace@hotmail.com]
Sent: Friday, April 12, 2002 8:50 AM
To: pgsql-sql@postgresql.org
Subject: [SQL] PL/PGSQL question on transactions


Can you imbed BEGIN; and COMMIT; statements in the body of a pl/pgsql 
function?

I am getting a parse error upon execution when I try it.

Code:

CREATE FUNCTION chitadj(integer,integer) RETURNS integer AS '
DECLARE result integer; oldamount integer;
BEGIN   BEGIN;   SELECT INTO oldamount chits FROM avatar   WHERE avatar_id = $1;
   IF oldamount IS NULL THEN     RETURN -1;   END IF;
   IF ((oldamount < abs($2)) AND ($2 < 0)) THEN     RETURN -2;   END IF;
   result := oldamount + $2;   RETURN result;   COMMIT;
END;
' language 'plpgsql';



-------------------------
Dan

_________________________________________________________________
Join the world's largest e-mail service with MSN Hotmail. 
http://www.hotmail.com


---------------------------(end of broadcast)---------------------------
TIP 6: Have you searched our list archives?

http://archives.postgresql.org