Find the difference between the total number of CITY entries in the table and the number of distinct CITY entries in the table.
The STATION table is described as follows:
Field
Type
ID
INT
CITY
VARCHAR(21)
STATE
VARCHAR(2)
LAN_N
NUMERIC
LONG_W
NUMERIC
where LAT_N is the northern latitude and LONG_W is the western longitude.
For example, if there are three records in the table with CITY values 'New York', 'New York', 'Bengalaru', there are 2 different city names: 'New York' and 'Bengalaru'. The query returns 1, because total number of records - number of unique city names = 3 - 2 = 1