Re: commit within a procedure loop - cannot commite withsubtransaction

On 1/21/19 4:43 AM, andyterry wrote:
> Hi,
> 
> Using a procedure for the first time to run some processing for each row in
> a table, generating output to a target table. The following works without
> COMMIT the example below gives:
> 
> INFO: Error Name:cannot commit while a subtransaction is active
> INFO: Error State:2D000
> 
> Could someone point me in the right direction so i can understand why and
> how i might rework my methodology?

1) This is Postgres 11, correct?

2) I have to believe the issue is the:

PERFORM my_functions.processing_function(grd_geom);

https://www.postgresql.org/docs/11/plpgsql-transactions.html
"...But if the call stack is CALL proc1() → SELECT func2() → CALL 
proc3(), then the last procedure cannot do transaction control, because 
of the SELECT in between."

3) What is my_functions.processing_function() doing?

> 
> 
> CREATE OR REPLACE PROCEDURE my_functions.first_procedure(
>     )
> LANGUAGE 'plpgsql'
> 
> AS $BODY$
> 
> DECLARE
> 
> grd_geom geometry(Polygon,27700);
> grd_gid integer;
> rec data.areas%rowtype;
> 
> BEGIN
> 
> DELETE FROM data.output;
> DELETE FROM data.temp_output;
> 
> FOR rec IN SELECT * FROM data.areas
>     LOOP
>         grd_geom := rec.geom;
>         grd_gid := rec.gid;
> 
>         PERFORM my_functions.processing_function(grd_geom);
>         DELETE FROM data.temp_output;
>         COMMIT;
>     END LOOP;
> RETURN;
>                                             
> 
> END;
> 
> $BODY$;
> 
> GRANT EXECUTE ON PROCEDURE my_functions.first_procedure() TO postgres;
> GRANT EXECUTE ON PROCEDURE my_functions.first_procedure() TO PUBLIC;
> 
> Thanks
> 
> Andy
> 
> 
> 
> --
> Sent from: http://www.postgresql-archive.org/PostgreSQL-general-f1843780.html
> 
> 


-- 
Adrian Klaver
adrian.klaver@aklaver.com