The difference between EXISTS and IN is that EXISTS only allows an expression on the right.

Question

Quizplus · Accepted Answer

The main difference between EXISTS and IN in SQL is that EXISTS is used to test for the existence of any record in a subquery, while IN is used to compare a value to a list of literal values that are returned from a subquery. EXISTS returns true if the subquery returns one or more records, whereas IN compares a value on the left to each value in a list and returns true if a match is found.

The Difference Between EXISTS and IN Is That EXISTS Only