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