[candiddevmike]

I don't follow how you would do that in a stored procedure outside of a trigger.

[const_cast]

I think instead of performing an INSERT you call a stored proc that does the insert and some extra stuff.

[shivasaxena]

Yes, we already have all of our business logic in postgres functions(create_order, create_partial_payment etc).

Doing the extra work in stored procedures is noticeably faster than relying on triggers.