[SQL] Adding NOT NULL columns in PostgreSQL 7.4?

[Michael Eshom]

I'm currently using PostgreSQL 7.4.17, and trying to add a NOT NULL 
column results in an error about "Adding NOT NULL columns is not 
implemented". The only reports of this error I can find online relate to 
PostgreSQL 7.2, and further state that it was supposed to be implemented 
in PostgreSQL 7.3, so I can't figure out why it's still saying it's not 
implemented.
--

Michael Eshom
Christian Oldies Fan
Cincinnati, Ohio