Zakkr,
I wonder if you read my message. I am aware of the examples in the contrib/spi
directory, but they aren't enough for me. I'm looking for a more specific
trigger documentation, or more trigger examples.
I would like to know how, from a trigger C function, can I get the "old" and
"new" value for an updated field. Is this possible? How do I do that?
For example, if I do:
update users set username = "clinton" where id = "2400"
When the trigger is activated, is it possible to compare the OLD value and NEW
value of the field "username"?
Did you understand? ;-)
Thanks!
> > I'm new to PostgreSQL, but I've been using MySQL/mSQL for a long time now.
I > > switched to PostgreSQL mostly because of it's features: triggers,
specially. > >
>
> Trigger examples ... why not:
> ..see a /postgresql-6.5.1/contrib/spi directory in PostgreSQL source package.
>
> Zakkr
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