Re: hi let me know the solution to this question

On 7/18/06, Michael Fuhr <mike(at)fuhr(dot)org> wrote:
>
> On Tue, Jul 18, 2006 at 10:46:29AM +0530, Penchalaiah P. wrote:
> > Can u let me know if at all any system defined variable exists to check
> > whether insert , update , and delete is successfully executed in a
> > stored procedure........
> >
> > So that I can perform some steps based on the result of execution if
> > possible please send me the sample code...............
>
> Depending on what you mean by "successfully executed," see "Obtaining
> the Result Status" or "Trapping Errors" in the PL/pgSQL documentation
> (error trapping is available in 8.0 and later).
>
>
> http://www.postgresql.org/docs/8.1/interactive/plpgsql-statements.html#PLPGSQL-STATEMENTS-DIAGNOSTICS
>
> http://www.postgresql.org/docs/8.1/interactive/plpgsql-control-structures.html#PLPGSQL-ERROR-TRAPPING

OK, this question got me wondering: is there a way to determine, in a
function/stored procedure, the number of rows that were
inserted/updated/deleted?

For example, the following does NOT work but shows what I am trying to
achieve:

CREATE OR REPLACE FUNCTION "public"."test_fn" () RETURNS VOID AS
'
DECLARE
mycount INTEGER;
BEGIN
-- This assignment will not work be I want something like it
-- so I can count the number of records updated.
mycount := EXECUTE
''update mytable '' ||
''mycolumn = 1 '' ||
''WHERE '' ||
'' mycolumn = 2 ''
;

RAISE NOTICE ''count = %'', mycount;

RETURN;
END;
'
LANGUAGE 'plpgsql' VOLATILE CALLED ON NULL INPUT SECURITY INVOKER;

I could not find any documentation about getting the count of updates but
when you run the update by itself, PostgreSQL reports the number of records
updated so I have to believe the information is available somewhere.

Thanks,
Aaron

==================================================================
Aaron Bono
Aranya Software Technologies, Inc.
http://www.aranya.com
==================================================================