SQL쿼리학습(query/정보처리/컴활1급/연습/퀴즈)

A site where you can learn and test SQL queries.
create, select, insert, update, delete, alter, drop
Practice these SQL commands by entering them directly using company and school tables provided in the 'SQL Query Learning' app database!

Those who are preparing for computer certification!
Didn't you give up and pass every time SQL was asked?
SQL questions presented in computer and information processing technicians/articles are also prepared. It's not hard if you practice over and over again!