Re: ALTER TABLE - ALTER COLUMN question

Keaton Adams <kadams@mxlogic.com> writes:
> In this example the created and msg_datetime columns are currently
> defined as TIMESTAMP WITHOUT TIME ZONE and no default.  If the alter
> table for these changes is not in-place then I would want to run it as a
> single alter with all of the changes, such as this, instead of
> individual alters for each change, correct?  (Because each individual
> alter would require another table copy?)

That's why ALTER TABLE has the ability to do more than one thing in
parallel ...

            regards, tom lane