이 레슨은 당분간 영어로 제공돼요.
Patterns and the unknown
Exact matches are not always enough: sometimes you want every post that mentions chess. And some values are simply missing. SQL has a tool for each, and the second one comes with a famous twist.
이 레슨은 당분간 영어로 제공돼요.
Exact matches are not always enough: sometimes you want every post that mentions chess. And some values are simply missing. SQL has a tool for each, and the second one comes with a famous twist.