mysql select that calculated percentage

Question

我有一個表作爲字段和用戶名作爲另一個計數。我已經成功通過此查詢獲得的所有記錄有問題的當月總數：

select count(*) 
from forms 
where Month(date) = MONTH(CURDATE()) 
    AND YEAR(CURDATE()); 

我也設法通過這個查詢來獲取個人用戶的條目：

select u_name, count(*) AS numb 
from forms 
where Month(date) = MONTH(CURDATE()) 
    AND YEAR(CURDATE()) 
GROUP BY U_name 
ORDER BY numb DESC;` 

所以......第一個給我回到了'12'之類的東西......換句話說，10月份錄入了12條記錄（比方說）。第二個查詢給了我這樣的：

約翰5 瑪麗7

我正在與struggeling是一個查詢，這將使我的每個用戶條目的比例....即約翰是41％。在12項中有5項。

希望我清楚....感謝您的任何幫助。

Answer 1

加入用分組查詢計算總數的查詢。

SELECT u_name, COUNT(*) AS numb, COUNT(*)*100/total AS pct 
FROM forms 
CROSS JOIN (SELECT COUNT(*) AS total 
      FROM forms 
      WHERE MONTH(date) = MONTH(NOW()) AND YEAR(date) = YEAR(NOW())) AS x 
WHERE MONTH(date) = MONTH(NOW()) AND YEAR(date) = YEAR(NOW())