WordPress查询帮助

Question

试图构建一个有点复杂的WordPress查询。通过最新帖子

1. 把所有的WordPress作者
2. 有10分以上的帖子发表（我遇到什么麻烦）
3. 排序作者只作者：在一个查询中，我想。

这是我原来的查询：

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; 

该查询返回所有作者甚至那些9分或更低发表的帖子。

这里是与统计有关的职位查询：

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; 

在这个查询，你可以看到，我已经添加了：

COUNT(post_date) as post_count 

哪些精美返回的一切。

只有当我加入这个WHERE子句，确实查询休息

post_count > 9 

我收到此错误信息：在

未知列'POST_COUNT 'where子句'

任何想法，为什么这是happing？我的理论：

1. 不会与分组
2. 工作或MySQL不允许超过一个AS语句

如果你能提供一些线索，我将不胜感激。

谢谢。

Answer 1

变化GROUP BY

后查询post_count > 9

与HAVING post_count > 9的WHERE部分的条件最终的查询将会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

您正在寻找的“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;