SUM JOIN其他表返回双值SQL

Question

我有2张桌子

请帮助我在下面返回结果

Answer 1

您可以先执行JOIN，然后再进行求和：

SELECT p.code,  SUM(p.price) price_total, SUM(s.total) sale_total
FROM Produce p INNER JOIN
     (SELECT ID, SUM(salesoff) as total
      FROM Sale s
      GROUP BY ID
     ) s 
     ON s.ID = p.id
GROUP BY p.code;