Cette leçon est en anglais pour le moment.
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.
Cette leçon est en anglais pour le moment.
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.