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목록SQL코테 (3)
HAZEL
[SQL : 정규표현식 ] HackerRank : Weather Observation Station 7 / 8
Weather Observation Station 7 >> 문제 Query the list of CITY names ending with vowels (a, e, i, o, u) from STATION. Your result cannot contain duplicates. Input Format The STATION table is described as follows: where LAT_N is the northern latitude and LONG_W is the western longitude. >> 기본적으로 푸는 방법 SELECT DISTINCT city FROM station WHERE city LIKE '%a' OR city LIKE '%e' OR city LIKE '%i' OR city L..
[SQL : 정규표현식 ] HackerRank : Weather Observation Station 6 / 9
Weather Observation Station 6 >> 문제 Query the list of CITY names starting with vowels (i.e., a, e, i, o, or u) from STATION. Your result cannot contain duplicates. Input Format The STATION table is described as follows: where LAT_N is the northern latitude and LONG_W is the western longitude. >> 기본적으로 푸는 방법 select DISTINCT city FROM station WHERE city LIKE 'a%' OR city LIKE 'e%' OR city LIKE 'i%..
185. Department Top Three Salaries >> 문제 The Employee table holds all employees. Every employee has an Id, and there is also a column for the department Id. +----+-------+--------+--------------+ | Id | Name | Salary | DepartmentId | +----+-------+--------+--------------+ | 1 | Joe | 85000 | 1 | | 2 | Henry | 80000 | 2 | | 3 | Sam | 60000 | 2 | | 4 | Max | 90000 | 1 | | 5 | Janet | 69000 | 1 | |..