Solutions to SQL Basic Select section

Author: sknsht

SQL/Basic Select/Weather Observation Station 1/Solution.sql

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+SELECT CITY, STATE
+FROM STATION;

SQL/Basic Select/Weather Observation Station 3/Solution.sql

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+SELECT DISTINCT CITY
+FROM STATION
+WHERE MOD(ID, 2) = 0;

SQL/Basic Select/Weather Observation Station 4/Solution.sql

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+SELECT COUNT(CITY) - COUNT(DISTINCT CITY)
+FROM STATION;