Hi, I need to do spatial queries like find places within 5 miles of a location given in latitude and longitude. So, I am thinking of exploring PostGIS and GeoDjango. I have installed both. Now, I already have a database which has a table for places with latitude and longitude. Can I enable this db to use postgis and add column to this table? Or, do I have to create a separate spatial db, create a table with a column of geometry type and import data into that table (from places table).? If I can use the existing database, how do I enable it to use PostGIS?
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