Commented the psql queries

911_history.sql

+/* Converts Positive longitudes to Negative. */
 UPDATE calls SET longitude = (-1 * longitude) WHERE longitude > 0;
-
+/* Updating our_complaint by collapsing the 10 code s*/
 UPDATE calls SET our_complaint = '10-11' WHERE complaint LIKE '10-11%';
 UPDATE calls SET our_complaint = '10-10' WHERE complaint = '10-10';
 UPDATE calls SET our_complaint = '' WHERE complaint = '';
@@ -15,31 +16,30 @@ UPDATE calls SET our_complaint = '10-58' WHERE complaint LIKE '10-58%';
 UPDATE calls SET our_complaint = '10-59' WHERE complaint LIKE '10-59%';
 UPDATE calls SET our_complaint = '10-70' WHERE complaint LIKE '10-70%';
 UPDATE calls SET our_complaint = '10-97' WHERE complaint LIKE '10-97%';
-
+/* Craigles did something here */
 CREATE TEMPORARY TABLE temptable (call character(20), abb character(5), name character(50));
 \copy temptable (call, abb, name) from '/home/datascience/departmentsdispatched.csv' with (format csv);
-
+/* Craigles did something here */
 \copy temptable (call, abb, name) from '/cluster/home/datascience/departmentsdispatched.csv' with (format csv);
 CREATE TEMPORARY TABLE temptable (call character(20), abb character(5), name character(50));
 \copy temptable (call, abb, name) from '/cluster/home/datascience/departmentsdispatched.csv' with (format csv);
 insert into test (agency_abbrev, agency_name) select abb, name from temptable;
-
+/* Craigles did something here */
 DROP TABLE temptable;
 \copy call_details FROM '/cluster/home/datascience/departmentsdispatched.csv' WITH DELIMITER (',') CSV;
 \copy call_details FROM '/cluster/home/datascience/departmentsdispatched.csv' WITH DELIMITER (',') CSV;
 \copy call_details FROM '/cluster/home/datascience/departmentsdispatched.csv' CSV;
-
+/* Make another copy of the table calls*/
 create table test as select * from calls;
 
 alter table test add our_city char(20);
-
+/* Updating our_city column which has correct city, or county when the city is not in Wayne County(or State in case of Ohio). */
 update test set city = 'Richmond' where city = 'RCHMOND';
 update test set our_city = 'Richmond' where lower(city) like '%ichm%';
 update test set our_city = 'Richmond' where lower(city) = 'rchmond';
-update test set our_city = 'Randolph county', out_of_jurisdiction = true where lower(city) like 'rando%';
+update test set our_city = 'Randolph county', out_of_jurisdiction = true where lower(city) like 'rando%'; -- out_of_jurisdiction is set to True for cities out of Wayne County
 update test set our_city = 'Rush county', out_of_jurisdiction = true where lower(city)='rushville';
 update test set our_city = 'Randolph county', out_of_jurisdiction = true where lower(city)='ridgeville';
-update test set our_city = 'Greens Fork' where lower(city)='greens%';
 update test set our_city = 'Greens Fork' where lower(city) like 'greens%';
 update test set our_city = 'Fayette county', out_of_jurisdiction = true where lower(city) like 'fayette%';
 update test set our_city = 'Fayette county', out_of_jurisdiction = true where lower(city) like 'connersville%';
@@ -74,6 +74,5 @@ update test set our_city = 'Muncie' where lower(city) = 'sweetwater';
 update test set our_city = 'Centerville' where lower(city) = 'cnet';
 update test set our_city = 'Economy' where lower(city) = 'econd';
 update test set our_city = 'Richmond' where lower(address) = '18 n 22nd st';
-
-\copy (select (address || ',' || our_city) as c_add from test where latitude is null and complaint_category <> 'o') to 'lat_long_find.csv' with csv delimiter ',';
+/* Make a csv file for the addresses which do not have latitudes and are not to be ommitted. This file is then used by the QGIS for geocoding. */
 \copy (select address, our_city from test where latitude is null and complaint_category <> 'o') to 'lat_long_find.csv' with csv delimiter ',';