Question

我是SQL Server新手。我想使用sum函数等于两列。请找到以下查询。

select top 1000 
    o.orderamount, sum(oi.amount), oi.orderid 
from 
    orders o 
inner join 
    orderitem oi on o.orderid = oi.orderid 
where 
    orderamount = sum(oi.amount)
group by  
    oi.orderid, orderamount
order by 
    oi.orderid desc

每当我执行此代码时，都会收到错误。

请帮帮我。

Answer 1

您可以使用HAVING：

[1]

Answer 2

您可以使用：

select  top 1000 o.orderamount, oi.amount, oi.orderid 
from orders o 
inner join (select orderid, sum(amount) amount from orderitem group by orderid) orderitem 
oi on o.orderid = oi.orderid and orderamount = oi.amount
order by oi.orderid desc

Answer 3

在求和查询中尝试使用HAVING而不是WHERE子句。另外：添加缩进和大写以提高可读性

SELECT TOP 1000  o.OrderAmount, sum(oi.Amount), oi.OrderID 
  FROM  Orders o 
        INNER JOIN OrderItem oi ON oi.OrderID = o.OrderID
  GROUP BY  oi.OrderID, OrderAmount
    HAVING  OrderAmount = sum(oi.Amount)
  ORDER BY  oi.OrderID DESC;

如何在SQL Server的where子句中使用sum函数？

3 个答案: