Re: [Postgres-xc-general] Table distribution/replication and other things

On Wed, Jan 30, 2013 at 8:01 PM, Christophe Le Roux <
chr...@fr...> wrote:

>                  Can we distribute and replicate a table ? (A table
> distributed on 3 datanodes (for performance) and replicated on 3 others
> datanode(for availability without down time) – I’m not talking about hot
> standby or streaming replication included in standard postgresql)
>
 This is not supported directly, but you could try something like that,
perhaps it will work that's just an idea. This idea uses as a base the
internal Postgres partitioning mechanism:
CREATE TABLE tab (col1 int, col2 int) DISTRIBUTE BY REPLICATION;
CREATE TABLE tab1 (CHECK col1 >= 100 AND CHECK col1 < 200) INHERITS
(tab) *DISTRIBUTE
BY HASH(col1);*
CREATE TABLE tab2 (CHECK col1 >= 200 AND CHECK col1 < 300) INHERITS
(tab) *DISTRIBUTE
BY REPLICATION;*
Putting an index on column col1 would be good also. Here the secret is to
have the parent table replicated.
-- 
Michael Paquier
http://michael.otacoo.com