使用金額和在哪裏

Question

我試圖計算一個客戶所做的所有購買的總和。

我有一個包含所有購買（CustomerID，ItemID，金額），客戶（客戶ID，姓名，地址）和項目（ID，價格）表的表格。

這是我目前最好的嘗試，但我得到一個錯誤，我如何使用羣（這是奇怪的自我）。

SELECT name,address 
    FROM (purchases as p join customer as c on p.customerID = c.customerID 
    join item as i on p.ean = i.ean) 
    where sum(i.outprice * p.amount) >2500 
    group by p.customerID; 

此查詢下面的工作完美。但是，所有我想要做的是隻顯示其中 總和（i.outprice * p.amount）> X對於任何給定X.

SELECT name,address,sum(i.outprice * p.amount) 
    FROM (purchases as p join customer as c on p.customerID = c.customerID 
    join item as i on p.ean = i.ean) 
    group by p.customerID; 

我應該如何去這樣做呢？

謝謝！

Answer 1

SELECT name,address 
    FROM (purchases as p join customer as c on p.customerID = c.customerID 
    join item as i on p.ean = i.ean) 
    group by p.customerID 
having sum(i.outprice * p.amount) >2500