I started feeling nobody wants to answer those questions but finally got a
reply :-)
Thanks a lot Scott.
- Salma
----- Original Message -----
From: "Scott Marlowe" <scott.marlowe@xxxxxxxxx>
To: "salma" <salma.khanam@xxxxxxxxxxx>
Cc: <pgsql-novice@xxxxxxxxxxxxxx>; <pgsql-general@xxxxxxxxxxxxxx>
Sent: Friday, December 19, 2008 5:36 AM
Subject: Re: Need help - Regarding Data Compression in PostgreSQL.
On Tue, Dec 16, 2008 at 6:52 AM, salma <salma.khanam@xxxxxxxxxxx> 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.
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