PFC wrote:
> Also, sometimes offine TOASTing is evil :
> Say you have a forum, you want the posts table to be CLUSTER'ed on
> (topic_id, post_id) so displaying 1 page with 30 posts on it uses 1 seek,
> not 30 seeks. But CLUSTER doesn't touch the data that has been pushed
> offline in the toast table. So, in that case, it can pay (big time
> actually) to disable toasting, store the data inline, and benefit from
> cluster.
This claim is false -- CLUSTER does process the toast table along the
main heap.
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
