Bruce Momjian <pgman@candle.pha.pa.us> writes:
> Alvaro Herrera wrote:
>> This means that when you do ALTER TABLE ... SET/DROP NOT NULL the table
>> may have to be completely rewritten?
> I don't think we would change any physical ordering with ALTER TABLE ---
> just do it when the table is created, if possible.
Right, I was just thinking of this as an optimization we'd apply during
initial table creation. Renumbering columns later on would be a huge
mess, far more work than the optimization is worth.
regards, tom lane