서울 워킹 홀리데이

​ ​ ​ SELECT 문에서 Ailas (별칭) 을 사용했는데 오류가 났다. 이유 => 컬럼명 대신 별칭 사용 가능, 함수에 별칭 사용 불가 ​ ​ 아래 예제는 가능 ​ Manhattan distance ​ The distance between two points measured along axes at right angles. In a plane with p1 at (x1, y1) and p2 at (x2, y2), it is ​|x1 - x2| + |y1 - y2|. ​ ​ 출처 https://www.mygreatlearning.com/blog/hierarchical-clustering/#manhattandistance What is Hierarchical Clustering? An Introduc..

Query the Western Longitude (LONG_W)where the smallest Northern Latitude (LAT_N) in STATION is greater than 38.7780. Round your answer to 4 decimal places. ​ ​ ​ ​ *서브쿼리 (SubQuery)

Query the smallest Northern Latitude (LAT_N) from STATION that is greater than 38.7780. Round your answer to 4 decimal places. ​ ​ *서브쿼리 (SubQuery)

Query the Western Longitude (LONG_W) for the largest Northern Latitude (LAT_N) in STATION that is less than 137.2345. Round your answer to 4 decimal places. ​ ​ *서브쿼리 (SubQuery)

Write a query that prints a list of employee names (i.e.: the name attribute) for employees in Employee having a salary greater than 2000 per month who have been employees for less than 10 months. Sort your result by ascending employee_id. ​ ​

Write a query that prints a list of employee names (i.e.: the name attribute) from the Employee table in alphabetical order. ​

Query the Name of any student in STUDENTS who scored higher than 75 Marks. Order your output by the last three characters of each name. If two or more students both have names ending in the same last three characters (i.e.: Bobby, Robby, etc.), secondary sort them by ascending ID. ​ ​

Query the list of CITY names from STATION that do not start with vowels and do not end with vowels. Your result cannot contain duplicates. ​ 이름의 처음과 끝이 모음으로 시작하지 않는 도시를 중복없이 출력해라. ​

Query the list of CITY names from STATION that either do not start with vowels or do not end with vowels. Your result cannot contain duplicates. ​ 이름의 처음 또는 끝이 모음으로 시작하지 않는 도시를 중복없이 출력해라. ​

Query the list of CITY names from STATION that do not end with vowels. Your result cannot contain duplicates. ​ 이름이 모음으로 끝나지 않는 도시를 중복없이 출력해라. ​