You'd have the same problem. By the time the trigger sees it, the row
has already been converted to the table's column datatype(s), so any
exception associated with a datatype or domain would be thrown already.
A lot of people seem to have trouble with this concept; I dunno what
data representation they think the trigger is working on...
If you want to enforce constraints for a table in the trigger, you can
do that, but it's not going to work to try to mix and match
trigger-based and datatype-based restrictions.
regards, tom lane
I have no problem with the concept now that I understand it. It is just
different than InterBase and Firebird which I have done a lot of work
with lately. Thanks very much for your help.
Bill
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