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:
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 , because .
Weather Observation Station 4 query in SQL – Hacker Rank Solution
select count(city) - count(distinct city) from station;
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