mysql - MySQL Concat 和 GROUP BY

Question

我有 2 个表：People和Writings. 我想获得写书最多的 3 个人的名单。

表：

我想得到写书最多的前 3 人（书 = 主题）。他们应该从最多到最少订购（我的意思是那 3 个人）。

我试着这样做：

SELECT People.Name, People.Secondname,     
  People.City, COUNT( Writings.Author)  AS Kiekis       
FROM Writings, People 
WHERE  CONCAT (People.Name, ' ',People.Secondname) = Writings.Author 
GROUP BY Kiekis DESC LIMIT 3; 

Answer 1

SELECT Author, COUNT(*)
FROM People, Writings 
WHERE CONCAT (People.Name, ' ',People.Secondname) = Writings.Author 
GROUP BY Author 
ORdER BY COUNT(*) DESC 
LIMIT 3

但是表之间的连接真的很奇怪，我的意思是在第一个表中使用 author_id 会更好。