not reversed, but the reverse of ZipCodeCore#11

Author: mgawron8

answers/exercise12.sql

@@ -0,0 +1,9 @@
+mysql> SELECT * FROM students ORDER BY city DESC;
++-------------+-------------+---------+------------+----------+
+| StudentName | Address     | City    | Postalcode | Country  |
++-------------+-------------+---------+------------+----------+
+| Jane Doe    | 57 Union St | Glasgow | G13RB      | Scotland |
++-------------+-------------+---------+------------+----------+
+1 row in set (0.00 sec)
+
+mysql>