MySQL：有点复杂的查询返回计数结果错误

Question

有这三个表：

posts
posts_replies
likes

此查询返回的数据几乎没有问题，但由于某种原因，帖子上的回复COUNT不准确。

SELECT posts.title, posts.num, posts.status, posts.category, posts.content, posts.member_num, COUNT( posts_replies.post_num ) AS count, COUNT( likes.comment_num ) AS likes_count
FROM posts_replies
INNER JOIN posts ON ( posts_replies.post_num = posts.num )
LEFT JOIN likes ON ( likes.comment_num = posts_replies.num )
WHERE posts.status =1
AND posts.access = 'Public'
GROUP BY posts.num
ORDER BY count DESC
LIMIT 50

这是我正在使用的计数： COUNT（posts_replies.post_num）AS计数

有关于此的任何建议吗？

谢谢

Answer 1

您的查询会为每个回复计算一次，就像链接到该回复一样。

为了只计算一次回复，请替换

COUNT( posts_replies.post_num ) AS count

与

COUNT(DISTINCT posts_replies.num ) AS count