Gail Zacharias writes:
> Is this even possible? Is ALTER TABLE supported?
Yes. (RTFM)
> If so, what performance characteristics can I expect? Compared to, say,
> inserting a record, can I expect this to be 10 times slower? 1000 times
> slower? What does the performance depend on? Number of rows? Number of
> columns? Number of tables? anything else?
Adding a column runs in constant time.
--
Peter Eisentraut peter_e@gmx.net