An Efficient Way to Check for Existence of Multiple Values in SQL

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2025-05-31 20:25:35 -

What's faster, COUNT(*) or COUNT(*) with LIMIT in SQL? Let's check In a previous blog post, we’ve advertised the use of SQL EXISTS rather than COUNT(*) to check for existence of a value in SQL. I.e. to check if in the Sakila database, actors called WAHLBERG have played in any films, instead of: SELECT count(*) FROM actor a JOIN film_actor fa USING (actor_id) WHERE a.last_name =...

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