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diff --git a/production/example_apps/zippy_maps/docs/producing_location_tables_from_zip_db_v001.sql b/production/example_apps/zippy_maps/docs/producing_location_tables_from_zip_db_v001.sql
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+# note: this code was appropriate before migration AddLatLongColumnsToLocationsTable happened in july 2017.
+# if one wanted to take a kake zip style db to the map demo db, there would be a few changes (such as getting rid of the
+# combining of lat and long into a single field).
+
+# a bunch of helper bits.  real important code is at the end.
+use zipcodes;
+select database();
+show tables;
+select * from kake_zip_code;
+select lat, lon, locationtext, country from kake_zip_code ;
+select location, concat(lat, ',', lon), concat(locationtext, ' ', zip_code, ', ', country) from kake_zip_code where lat != 0 and lon != 0 limit 500;
+describe locations;
+describe categories;
+describe categories_locations;
+
+# testing select with concats.
+select location, concat(locationtext, ' ', zip_code), concat(lat, ',', lon) from kake_zip_code where lat != 0 and lon != 0 limit 500;
+
+select * from kake_zip_code limit 500;
+select * from locations;
+select * from categories;
+select * from categories_locations;
+delete from locations where id != 0;
+ALTER TABLE locations AUTO_INCREMENT = 1;
+delete from categories where id != 0;
+ALTER TABLE categories AUTO_INCREMENT = 1;
+delete from categories_locations where id != 0;
+ALTER TABLE categories_locations AUTO_INCREMENT = 1;
+
+select * from locations where location like '%, AK %';
+
+# these are the important actions...
+
+# the real business gets done by these inserts.
+insert into locations (id, name, location, latlong, created, modified) select null, concat(location, '-', zip_code), concat(locationtext, ' ', zip_code), concat(lat, ',', lon), now(), now() from kake_zip_code where lat != 0 and lon != 0 limit 500000;
+insert ignore into categories (id, name, created, modified, image) select null, concat(country, '-', state_prefix), now(), now(), null from kake_zip_code where lat != 0 and lon != 0 limit 500000;
+# big one, getting the categories done automatically...
+insert ignore into categories_locations (id, location_id, category_id, created, modified) 
+ select null, locations.id as location_id, categories.id as category_id, now(), now() from locations inner join categories where locations.name like concat('%', categories.name, '%') limit 500000;
+