Hello coders, In this post, you will learn how to solve the Weather Observation Station 4 query in SQL Hacker Rank Solution. This problem is a part of the SQL Hacker Rank series.
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;
Disclaimer: The above Problem (Weather Observation Station 4 query in SQL) generated by Hackerrank but the Solution is Provided by Chase2Learn. This tutorial is only for Educational and Learning purposes.