Michael Fuhr wrote:
On Tue, Jul 17, 2007 at 01:51:21PM +0100, ann hedley wrote:
What I want is the average and stddev of the set of lengths returned by
this query. Something like...
select average(select distinct on (id) length(consensus) from cluster
order by id,length(consensus) desc);
I think this is what you're looking for:
select avg(length)
from (
select distinct on (id) length(consensus)
from cluster
order by id, length(consensus) desc
) s;
Thank you, it was indeed.
--
Ann
"In a world without walls and fences - who needs Windows and Gates ?"
(unknown)
