Computer Science · Structured Query Language
In terms of execution efficiency, when is the EXISTS operator typically preferred over the IN operator in SQL?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1When the subquery returns a very small and static dataset.
- 2When the subquery checks against a large dataset where short-circuit evaluation can improve performance.✓
- 3When performing multi-table aggregations inside the main query.
- 4When sorting the final output of the outer query using an ORDER BY clause.
Correct answer
When the subquery checks against a large dataset where short-circuit evaluation can improve performance.
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