Which of the following is a correlated subquery?
A
Uses the result of an inner query to determine the processing of an outer query
B
Uses the result of an outer query to determine the processing of an inner query
C
Uses the result of an inner query to determine the processing of an inner query
D
Uses the result of an outer query to determine the processing of an outer query
Correct Answer: Uses the result of an inner query to determine the processing of an outer query
A ‘correlated subquery’ is a term used for specific types of queries in SQL in computer databases. It is a subquery (a query nested inside another query) that uses values from the outer query in its WHERE clause.