Chris Travers <chris.trav...@gmail.com> writes:
> I want an email to go out to the ordering manager when the quantity I
> have of an item drops below the re-order point.  I also want this
> email NOT to go out if the transaction rolls back.  (Wait, the order
> of 50000 widgets I just processed rolled back because it isn't to a
> valid customer!  We normally only sell 50000 per year anyway.  No need
> for the email.)

Just use PGQ and be done with it.  You have transactional and
asynchronous behavior.  Typically, a trigger would produce events in the
queue, and a separate daemon will consume the queue and send emails.

Regards,
-- 
Dimitri Fontaine
http://2ndQuadrant.fr     PostgreSQL : Expertise, Formation et Support

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