Re: Question on Rules - Mailing list pgsql-general

-------- Original Message --------
Subject: Re: [GENERAL] Question on Rules
From: "David Johnston" <polobo@yahoo.com>
Date: Sun, February 19, 2012 9:16 pm
To: <mgould@isstrucksoftware.net>, <pgsql-general@postgresql.org>

-----Original Message-----
From: pgsql-general-owner@postgresql.org [mailto:pgsql-general-owner@postgresql.org] On Behalf Of mgould@isstrucksoftware.net
Sent: Saturday, February 18, 2012 5:17 AM
To: pgsql-general@postgresql.org
Subject: [GENERAL] Question on Rules

I am creating a rule which will copy a record when it is changed to a audittable. My question is that the first column is a UUID data type with a defined as auditaccessorid uuid DEFAULT
isscontrib.uuid_generate_v4() NOT NULL,

Right now I've got that set to NULL to allow the parser to "compile".
What value should I have in here since I want a newly created UUID?

CREATE RULE log_accessor AS ON UPDATE TO iss.accessor
WHERE NEW.* <> OLD.*
DO INSERT INTO iss.auditaccessor VALUES (NULL,
'C',
new.loaddtlid,
new.seqno,
new.billable,
new.payind,
new.code,
new.description,
new.ref,
new.tractororcarrierflag,
new.tractororcarrierno,
new.tractorpct,
new.charge,
new.type,
new.checkdate,
new.checkno,
new.processed,
new.itemflag,
new.tractortermloc,
new.cost,
new.batchno,
new.editdatetime,
new.edituser);

Best Regards,

Michael Gould
Intermodal Software Solutions, LLC
904-226-0978


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INSERT INTO table (serial_col1) VALUES (DEFAULT);

Also, I presume you have a good reason for using a RULE instead of a TRIGGER? If not you should default to a TRIGGER for this kind of behavior.

David J.



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