MySQL按另一个表的计数顺序

Question

让我说我有：

   SELECT bloggers.*, 
          COUNT(post_id) AS post_count
     FROM bloggers 
LEFT JOIN blogger_posts ON bloggers.blogger_id = blogger_posts.blogger_id
 GROUP BY bloggers.blogger_id
 ORDER BY post_count

返回按帖子计数排序的所有博主。 如果我只想要一些博客但按照相同标准排序（例如那些AUX字段等于3的那些博客）怎么办？

Answer 1

WHERE子句应紧接在GROUP BY子句之前。如果对语法的简单性有疑问，那么看的地方就是手册。

MySQL Manual :: SELECT Syntax

   SELECT bloggers.*, 
          COUNT(post_id) AS post_count
     FROM bloggers 
LEFT JOIN blogger_posts ON bloggers.blogger_id = blogger_posts.blogger_id
    WHERE bloggers.AUX = 3
 GROUP BY bloggers.blogger_id
 ORDER BY post_count