SQL 3일차
프로그래머스 SQL SELECT 문제 24개를 풀었다.
datediff() 를 사용해서 문제를 풀어봤는데 날짜계산할 때 편한것같다.
아직까지는 SQL 문제를 푸는데는 큰 어려움이 없어서 다행이다..
https://velog.io/@spainclub/SQL-16
https://velog.io/@spainclub/SQL-17
https://velog.io/@spainclub/SQL-18
https://velog.io/@spainclub/SQL-19
https://velog.io/@spainclub/SQL-20
https://velog.io/@spainclub/SQL-21
https://velog.io/@spainclub/SQL-22
https://velog.io/@spainclub/SQL-23
https://velog.io/@spainclub/SQL-24
https://velog.io/@spainclub/SQL-25
https://velog.io/@spainclub/SQL-26
https://velog.io/@spainclub/SQL-27
https://velog.io/@spainclub/SQL-28
https://velog.io/@spainclub/SQL-29
https://velog.io/@spainclub/SQL-30
https://velog.io/@spainclub/SQL-31
https://velog.io/@spainclub/SQL-32
https://velog.io/@spainclub/SQL-33
https://velog.io/@spainclub/SQL-34
https://velog.io/@spainclub/SQL-35
https://velog.io/@spainclub/SQL-36
https://velog.io/@spainclub/SQL-37
https://velog.io/@spainclub/SQL-38
https://velog.io/@spainclub/SQL-39
