Re: best way to choose index to cluster on?

A good guide for a clustered index is:-
Will the index be unique, static and narrow.
If not, avoid clustered indexing as they require extra work on disk to
maintain their sequence.

On 9/26/06, Chris Hoover <revoohc(at)gmail(dot)com> wrote:
>
> I am looking to squeeze a bit more speed out of my database by clustering
> most of my tables. However, on tables with multiple indexes, how is the
> best way to choose the index. I am thinking I want to use the index with
> the largest pg_stat_user_indexes.idx_tup_read. Would this be correct? If
> not, what column(s) and views should I be looking at to find the most
> popular index?
>
> Secondly, I have some partial indexes on a very active table, and it tends
> to have the highest idx_tup_read for that table. Is is possible to cluster
> on a partial index?
>
> Thanks,
>
> Chris
>