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LEFT JOIN on very large tables

Posted by StealthBananaT on 05/25/05 04:01

My database has two tables - films has 10,000 records and reviews has 20,000 records. Whenever I try to list all the films and the
count of its reviews, MySQL locks and I have to restart the service.

Here's the SQL...

SELECT films.*, COUNT(reviews.id)
FROM films LEFT JOIN reviews ON films.id = reviews.filmID
GROUP BY films.id
LIMIT 0, 100;

JOIN works but doesn't return records for films with no reviews. Please help!

--

StealthBanana

 

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