weather station 5
MySQL solution to the weather observation station 5 problem from HackerRank:
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CREATE TABLE STATION (
ID INT PRIMARY KEY,
CITY VARCHAR(21)
);
INSERT INTO STATION VALUES(1, 'Ohio');
INSERT INTO STATION VALUES(2, 'Boston');
INSERT INTO STATION VALUES(3, 'Loston');
SELECT CITY, CITY_LENGTH
FROM (
SELECT CITY, LENGTH(CITY) AS CITY_LENGTH
FROM STATION
ORDER BY LENGTH(CITY) ASC, CITY
LIMIT 1
) AS shortest
UNION ALL
SELECT CITY, CITY_LENGTH
FROM (
SELECT CITY, LENGTH(CITY) AS CITY_LENGTH
FROM STATION
ORDER BY LENGTH(CITY) DESC, CITY
LIMIT 1
) AS longest;