이 레슨은 당분간 영어로 제공돼요.
Queries inside queries
Who scored above the average? To answer, you first need the average. A subquery is a query in parentheses inside another query, and its answer feeds straight into the outer one.
이 레슨은 당분간 영어로 제공돼요.
Who scored above the average? To answer, you first need the average. A subquery is a query in parentheses inside another query, and its answer feeds straight into the outer one.