Question

我想在此查询中添加另一个表（评论）来计算每篇文章的评论数量。

$query  = "SELECT M.id,M.j_surname,A.j_user_id,A.id,A.jart_title, A.jart_description, A.jart_createddate, COUNT(C.artid) AS count_comments FROM jt_articles A, jt_members M, jt_article_comments C where M.id = A.j_user_id AND C.artid = A.id ORDER BY A.jart_createddate DESC

Answer 1

更新：类似的东西（你不发表评论表的方案）

      SELECT M.id,M.j_surname,A.j_user_id,A.id,A.jart_title, A.jart_description,
     A.jart_createddate , COUNT(A.id) AS count_comments
        FROM jt_articles A
left join  jt_members M on M.id = A.j_user_id 
left join  jt_article_comments C on C.artid = A.id        
        group by A.id
        ORDER BY A.jart_createddate DESC

计算文章中的评论数量

1 个答案: