In my project I see that people writes different things with EXISTS logical operator (EXISTS (SELECT StarOrOne FROM...)). They are "*", "1" and even "TOP 1 1" or "TOP 1 *". The aim of this article to give a good explanation which option is the best.
2020-01-24 (first published: 2017-04-24)
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In SQL Server 2025, what is returned by this code:
SELECT EDIT_DISTANCE('tim', 'tom')
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