mysql - 根据子查询计数返回 MYSQL 结果？

Question

有没有办法调整以下 MYSQL 查询，使其只显示视频计数大于 0 的结果？我尝试了以下但它无法识别

video_count

SELECT channels.*, 
(SELECT COUNT(*) FROM videos WHERE videos.video_publisher_id = channels.channel_id) as `video_count` 
FROM channels 
WHERE  channel_active = 1
AND video_count > 0
AND channel_thumbnail IS NOT NULL
ORDER BY channel_subscribers DESC

Answer 1

将您的子查询从 SELECT 子句移动到 FROM 子句。内部联接保证匹配。

SELECT c.*, v.video_count
FROM channels c
JOIN
(
  SELECT video_publisher_id, COUNT(*) AS video_count
  FROM videos 
  GROUP BY video_publisher_id
) v ON v.video_publisher_id = c.channel_id
WHERE c.channel_active = 1
  AND c.channel_thumbnail IS NOT NULL
ORDER BY c.channel_subscribers DESC;