[英]MySQL using NOT IN for temp table
我希望能够在条件表中查找条件为visible = 0
行,而不是来自以下查询结果的行:
SELECT c.id as cat_id, j.id
FROM category c
LEFT JOIN portfolio_job_category pjc
ON pjc.category_id = c.id
LEFT JOIN job j
ON j.id = pjc.job_id
WHERE c.visible = 0
AND j.end_date > CURRENT_DATE
GROUP BY c.id
有没有办法使用NOT IN
来找到这个?
我在下面尝试过,但这会永远循环并导致mysqld崩溃
SELECT c.id
FROM category c
WHERE c.id NOT IN
(SELECT c.id as cat_id, j.id
FROM category c
LEFT JOIN portfolio_job_category pjc
ON pjc.category_id = c.id
LEFT JOIN job j
ON j.id = pjc.job_id
WHERE c.visible = 0
AND j.end_date > CURRENT_DATE
GROUP BY c.id)
AND visible = 0
您不尝试使用LEFT JOIN
做什么
SELECT a.ID
FROM category a
LEFT JOIN
(
SELECT c.id as cat_id
FROM category c
LEFT JOIN portfolio_job_category pjc
ON pjc.category_id = c.id
LEFT JOIN job j
ON j.id = pjc.job_id
WHERE c.visible = 0 AND
j.end_date > CURRENT_DATE
) b ON a.ID = b.ID
WHERE b.ID IS NULL AND
a.visible = 0
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