function example?

Started by Matthew Peterover 20 years ago3 messagesgeneral
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#1Matthew Peter
survivedsushi@yahoo.com

Could someone help me and give me a basic example of
how to write a similiar functional function to the one
below that would use a dynamic table and update a
column only if it held a value.

I've been reading around and can't seem to find the
answer I'm looking for. I just need a simple examle to
build upon. I would rather not use plpgsql if
possible. Tom mentioned the other pl's don't need
EXECUTE or something like that and would prefer clean
syntax if possible.

Thanks a bunch

CREATE OR REPLACE FUNCTION updatefoo(tbl
varchar, data mydata, myid bigint) RETURNS
boolean AS $$
DECLARE
BEGIN
update ${tbl} set
f1 = mydata.f1
IF mydata.f2 IS NOT NULL THEN
,f2 = mydata.f2
END IF;
WHERE id = myid;

IF NOT FOUND THEN
return false;
END IF;
return true;
END
$$ LANGUAGE ?;

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#2A. Kretschmer
andreas.kretschmer@schollglas.com
In reply to: Matthew Peter (#1)
Re: function example?

am 29.10.2005, um 20:39:23 -0700 mailte Matthew Peter folgendes:

Could someone help me and give me a basic example of
how to write a similiar functional function to the one
below that would use a dynamic table and update a
column only if it held a value.

http://www.postgresql.org/docs/8.0/static/plpgsql-statements.html#PLPGSQL-STATEMENTS-EXECUTING-DYN

HTH, Andreas
--
Andreas Kretschmer (Kontakt: siehe Header)
Heynitz: 035242/47212, D1: 0160/7141639
GnuPG-ID 0x3FFF606C http://wwwkeys.de.pgp.net
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#3Matthew Peter
survivedsushi@yahoo.com
In reply to: A. Kretschmer (#2)
Re: function example?

Thanks I did read that when looking into EXECUTE,
which I'd rather not use. As I said, I would rather
not use plpgsql if possible.

All I want to do is 1) pass in some variables, 2)
reference them, and 3) have a working query which 4)
supports SELECTs, and lastly 5) isn't plpgsql but
pg_native syntax.

--- "A. Kretschmer"
<andreas.kretschmer@schollglas.com> wrote:

am 29.10.2005, um 20:39:23 -0700 mailte Matthew
Peter folgendes:

Could someone help me and give me a basic example

of

how to write a similiar functional function to the

one

below that would use a dynamic table and update a
column only if it held a value.

http://www.postgresql.org/docs/8.0/static/plpgsql-statements.html#PLPGSQL-STATEMENTS-EXECUTING-DYN

HTH, Andreas
--
Andreas Kretschmer (Kontakt: siehe Header)
Heynitz: 035242/47212, D1: 0160/7141639
GnuPG-ID 0x3FFF606C http://wwwkeys.de.pgp.net
=== Schollglas Unternehmensgruppe ===

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