< 교재 시작 : 데이터 베이스 첫걸음>
0 : https://www.inflearn.com/course/얄코-마이에스큐엘/dashboard
1: https://www.udemy.com/course/sql-mysql-for-data-analytics-and-business-intelligence/
2 : https://www.udemy.com/course/the-ultimate-mysql-bootcamp-go-from-sql-beginner-to-expert/
3: https://www.udemy.com/course/15-days-of-sql/
4: https://www.udemy.com/course/best-sql-2022/