的MySql獲得列的總和在新列的每一行

Question

，我有以下數據集：

market sale 
fr  10 
uk  10 
fr  12 
fr  3 
uk  1 

，我想添加一個新列在那裏我可以每行顯示的銷售總和這樣

market sale total sale 
fr  10   38 
uk  10   38 
us  3   38 
fr  2   38 
fr  12   38 
uk  1   38 

畝查詢需要在MySQL中新列的

感謝

Answer 1

您的請求選擇ID錯誤的設計，但如果你真的需要

可以使用子查詢

SELECT market, sale, (select sum(sale) as total from my_table) as total 
from my_table 

計算在列的總和，如果你只需要一些國家如FR，英國可以

SELECT market, sale, (select sum(sale) as total 
          from my_table 
          where market in ('FR', 'UK')) as total 
from my_table 
here market in ('FR', 'UK') 

或你總是需要總金額，你可以

SELECT market, sale, (select sum(sale) as total 
          from my_table 
         ) as total 
from my_table 
here market in ('FR', UK')