[OSM-dev] about Carto and SQL

[Darafei "Komяpa" Praliaskouski]

>
>
> 1) if all the SQL requests required to produce a map are in the style file
> or else if there are other SQL requests not if in this file ( and where
> they
> are ).
>

Part of SQL is wrapping and table discovery logic in Mapnik's PostGIS
driver, look for all text strings in
https://github.com/mapnik/mapnik/blob/333ef9fde145f88339eaccba810305707bae9b0e/plugins/input/postgis/postgis_datasource.cpp
starting
from line 170, and nearby files.
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