Re: select actual data size for a relation?

On Thu, 2009-10-22 at 17:41 -0600, Kevin Kempter wrote:
> Hi all;
>
> Anyone know how to select / calculate the actual data size for a table or
> index?

select pg_total_relation_size('relation')

>
> NOT the disk usage as in:
>  pg_class.relpages -- shows disk usage including bloat
> pg_relation_size() -- same as pg_class.relpages but in bytes
> or pg_total_relation_size()  -- total disk usage inclusive of bloat and
> indexes
>
> I want only the data size. I tried grabbing the sum of all the avg_width cols
> from pg_stats and multiplying times the pg_class.reltuples but this seems way
> too big.
>
> Thoughts?
>
>
>
> Thanks in advance
>


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