HR-SQL Weather Observation Station 6

1 개요

HR-SQL Weather Observation Station 6

• https://www.hackerrank.com/challenges/weather-observation-station-6/problem

해커랭크 SQL

문제	DB2	MS SQL	MySQL	Oracle
HR-SQL Basic Select e
HR-SQL Revising the Select Query I
HR-SQL Revising the Select Query II
HR-SQL Select All
HR-SQL Select By ID
HR-SQL Japanese Cities' Attributes
HR-SQL Japanese Cities' Names
HR-SQL Weather Observation Station 1
HR-SQL Weather Observation Station 3
HR-SQL Weather Observation Station 4
HR-SQL Weather Observation Station 5
HR-SQL Weather Observation Station 6
HR-SQL Weather Observation Station 7
HR-SQL Weather Observation Station 8
HR-SQL Weather Observation Station 9
HR-SQL Weather Observation Station 10
HR-SQL Weather Observation Station 11
HR-SQL Weather Observation Station 12
HR-SQL Higher Than 75 Marks
HR-SQL Employee Names
HR-SQL Employee Salaries

4 MySQL

SELECT DISTINCT CITY FROM STATION
WHERE LEFT(CITY,1) IN ('a','e','i','o','u');

SELECT DISTINCT CITY FROM STATION
WHERE MID(CITY,1,1) IN ('a','e','i','o','u');

SELECT CITY FROM STATION
WHERE LEFT(CITY,1) IN ('a','e','i','o','u');
GROUP BY CITY;

SELECT CITY FROM STATION
WHERE MID(CITY,1,1) IN ('a','e','i','o','u');
GROUP BY CITY;

SELECT DISTINCT CITY FROM STATION
WHERE CITY LIKE 'a%'
OR CITY LIKE 'e%'
OR CITY LIKE 'i%'
OR CITY LIKE 'o%'
OR CITY LIKE 'u%';

SELECT CITY FROM STATION
WHERE CITY LIKE 'a%'
OR CITY LIKE 'e%'
OR CITY LIKE 'i%'
OR CITY LIKE 'o%'
OR CITY LIKE 'u%'
GROUP BY CITY;