On Tue, Dec 16, 2008 at 6:52 AM, salma <salma.khanam@applabs.com> wrote:
> Hi,
>
> I'd like to know:
> 1. If it is possible to compress data in the PostgreSQL.
Ayup. Anything over a standard size gets compressed out of line into
TOAST tables.
> 2. What kind of compression, if any, is available in PostgreSQL.
Standard unix compress I believe
> 3. If compression is available, what kind of disk space savings can I expect
> using it.
depends on how compressible your data is. The compression that's
built into pgsql is focused on speed, not compression. So don't
expect 99% compression or anything. But on highly compressible data
you can expect it to compress quite well. Do an experiment with du
and see what you get.
A lot of this info is probably in the docs somewhere, but I'm not sure
it's a faq or not.
