Michael Fuhr <mike@fuhr.org> wrote:
> Altering a column's type rewrites the table so vacuuming afterward
> shouldn't be necessary.
I'm gonna alter another table type from double precision to real.
This table size is lager than disk free space.
Can it be possible?
Previsouly, I saw continuous increasing in disk usage until
alter complete.
I'm afraid of disk full and aftereffects.