suppose I have two tables

zips
----
zipcode
city_id (matches city_id in cities table)
latitude
longitude

cities
----
city_id
latitude
longitude

Say I would like to average all the zipcode lat/lons in each city to get an average latitude and longitude for a city. Then, i would like to put them in the latitude and longitude columns in the cities table. Is there a way I can do this with one query?

Thanks.

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http://www.douglassdavis.com


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