Diese Lektion gibt es vorerst nur auf Englisch.
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.
Diese Lektion gibt es vorerst nur auf Englisch.
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.