[OSM-dev] By the way ... spatial indexes

SteveC steve at asklater.com
Mon Sep 29 17:21:21 BST 2008


Thanks

thank FSM we don't use multi column indexes then huh?

On 29 Sep 2008, at 06:50, Andreas Kalsch wrote:

> ... are nearly 4 times faster than multi.colum indices for lat/lon in
> MySQL. Extracting 1 column / 17.000 rows out of 1 million takes .39  
> secs
> vs. 1.39 - I think all Postgres guys know a similar value. I think  
> this
> is a pretty impressing result.
>
>
>
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Best

Steve





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