WordPress查詢幫助

Question

試圖構建一個有點複雜的WordPress查詢。通過最新帖子

1. 把所有的WordPress作者
2. 有10分以上的帖子發表（我遇到什麼麻煩）
3. 排序作者只作者：在一個查詢中，我想。

這是我原來的查詢：

SELECT wp_users.ID, display_name, user_url, user_email, MAX(post_date) as date FROM wp_users, wp_posts WHERE wp_users.ID = wp_posts.post_author AND wp_posts.post_status = 'publish' AND wp_posts.post_type = 'post' GROUP BY display_name ORDER BY date DESC; 

該查詢返回所有作者甚至那些9分或更低發表的帖子。

這裏是與統計有關的職位查詢：

SELECT wp_users.ID, display_name, user_url, user_email, MAX(post_date) as date, COUNT(post_date) as post_count FROM wp_users, wp_posts WHERE wp_users.ID = wp_posts.post_author AND wp_posts.post_status = 'publish' AND wp_posts.post_type = 'post' GROUP BY display_name ORDER BY date DESC; 

在這個查詢，你可以看到，我已經添加了：

COUNT(post_date) as post_count 

哪些精美返回的一切。

只有當我加入這個WHERE子句，確實查詢休息

post_count > 9 

我收到此錯誤信息：在

未知列'POST_COUNT 'where子句'

任何想法，爲什麼這是happing？我的理論：

1. 不會與分組
2. 工作或MySQL不允許超過一個AS語句

如果你能提供一些線索，我將不勝感激。

謝謝。

Answer 1

變化GROUP BY

後查詢post_count > 9

與HAVING post_count > 9的WHERE部分的條件最終的查詢將會SELECT wp_users.ID, display_name, user_url, user_email, MAX(post_date) as date, COUNT(post_date) as post_count FROM wp_users, wp_posts WHERE wp_users.ID = wp_posts.post_author AND wp_posts.post_status = 'publish' AND wp_posts.post_type = 'post' GROUP BY display_name HAVING post_count > 9 ORDER BY date DESC;

Answer 2

您正在尋找的「具有」操作。

SELECT wp_users.ID, display_name, user_url, user_email, MAX(post_date) as date, COUNT(post_date) as post_count FROM wp_users, wp_posts WHERE wp_users.ID = wp_posts.post_author AND wp_posts.post_status = 'publish' AND wp_posts.post_type = 'post' GROUP BY display_name HAVING post_count>9 ORDER BY date DESC;