concatenating hstores in a group by?

Hi,

I have a table with a timestamp and hstore columns with times in milliseconds.

I want to concatenate the hstores, grouped by timestamp, with the timestamps truncated to whole seconds: date_trunc('seconds', timer).

How can I concatenate all the hstores within a one second interval,

ie, something like:

select timer,
<hstores concatenated>
from (select date_trunc('seconds', timer) as timer_sec, hstore)
group by timer;

Thanks

Brent Wood

Principal Technician, Fisheries
NIWA
DDI: +64 (4) 3860529

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Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

National Institute of Water & Atmospheric Research Ltd (NIWA)
301 Evans Bay Parade Hataitai Wellington New Zealand
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