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Optimize subquery, replace IN() with JOIN
Posted by: Miron jajtic
Date: November 15, 2016 02:37PM


I have sql query with two in() subqueries, they are returning correct 10 sorted results, but complete query it's terrible slow, over 5 minutes waiting.

SELECT id, title, alias
FROM content
WHERE published = '1'
AND typ = 'actual'
AND id
IN (
SELECT content_id
FROM category_content_se
WHERE category_id
IN (
SELECT category_id
FROM category_content_se
WHERE content_id = '11430'
AND content_typ = 'actual'
ORDER BY date_add DESC

Can someone please help me how to write same query using JOINs ?

Server is MySQLv5.6

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Optimize subquery, replace IN() with JOIN
November 15, 2016 02:37PM

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