Re: Determine potential change in table size after a column dropped?

So, there's really no way to reclaim space from a dropped column other than
entirely creating a new table?

On Mon, Jan 24, 2022 at 12:28 AM Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
wrote:

> On Sat, 2022-01-22 at 09:08 -0800, Wells Oliver wrote:
> > I need only drop the column and VACUUM FULL the table, and not the
> entire DB, right?
>
> Not that VACUUM (FULL) will *not* physically get rid of a dropped column,
> as it just copies the complete rows to a new table.
>
> You would need something like:
>
> CREATE TABLE newtab (LIKE oldtab);
> INSERT INTO newtab SELECT * FROM oldtab;
>
> Yours,
> Laurenz Albe
> --
> Cybertec | https://www.cybertec-postgresql.com
>
>

--
Wells Oliver
wells(dot)oliver(at)gmail(dot)com <wellsoliver(at)gmail(dot)com>