[postgis-users] Postigs layer in Mapserver

[Jan Hartmann]

Sorry, typo again (forgot to install my SQL-checker). The final select 
should be:

select the_geom from
zipcodes,
(select min(postal_code) as aggr_postal_code, count(*) as total_pop
      from data
      group by postal_code
) as aggrdata
where zipcodes.postal_code = aggrdata.aggr_postal_code

Jan