A subquery is required when the condition for the outer query is based upon an unknown.

Name: A subquery is required when the condition for the outer query is based upon an unknown.
Brand: Quizplus
Rating: 4.9 (35 reviews)

Question

A subquery is required when the condition for the outer query is based upon an unknown.​

Quizplus · Accepted Answer

That is correct. A subquery is used when we need to reference a value from a table that is not explicitly known in advance. The subquery is used in the WHERE or HAVING clause of the outer query to retrieve data based on the condition from the inner query.

A Subquery Is Required When the Condition for the Outer