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 1, because total number of records – number of unique city names = 3 – 2 = 1.
Solution Implementation
/*
Enter your query here and follow these instructions:
1. Please append a semicolon ";" at the end of the query and enter your query in a single line to avoid error.
2. The AS keyword causes errors, so follow this convention: "Select t.Field From table1 t" instead of "select t.Field From table1 AS t"
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*/
SELECT COUNT(CITY)- COUNT(DISTINCT CITY)
FROM STATION;
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