与您的链接问题不同，您没有在此处指定需要匹配所有标签。此查询适用于任何标签。

SELECT p.id, p.text, count(tg.id) as TagCount
    FROM Posts p 
        INNER JOIN Taggings tg 
            ON p.id = tg.post_id
        INNER JOIN Tags t 
            ON tg.tag_id = t.id
    WHERE t.name in ('Cheese', 'Wine', 'Paris', 'Frace', 'City', 'Scenic', 'Art')
    GROUP BY p.id, p.text
    ORDER BY TagCount DESC

试试这个：

Select p.Id, p.Text, Count(*)
   From Posts p 
      Left Join (Taggings tg Join Tags t 
                    On t.Tag_Id = tg.Tag_Id
                       And t.name in     
                        ('Cheese', 'Wine', 'Paris', 
                         'Frace', 'City', 'Scenic', 'Art'))
         On tg.Post_Id = p.Post_Id
   Group By p.Id, p.text  
   Order By Count(*) Desc