我在sql中的sum函数有问题,就像这样:
SELECT Member.Name, Book.Title AS BookBought, Order_Member_Det.Quantity, Order_Member_Det.Price, Order_Member.Total
FROM Order_Member
INNER JOIN OrderWithMember ON Order_Member.OrderID = OrderWithMember.OrderID
INNER JOIN Order_Member_Det ON OrderWithMember.MemberOrderID = Order_Member_Det.MemberOrderID
INNER JOIN Member ON OrderWithMember.MemberID = Member.MemberID
INNER JOIN Book ON Order_Member_Det.BookID = Book.BookID
结果是:
Name BookBought Quantity Price Total
----------------------------------------------------
John Flip it 2 50 150
John California Penal Code 1 50 150
Jack Forum Internationale 2 80 160
Alice Securitization 2 80 210
Alice The Cervical Spine 1 50 210
Kevin Trading Commodities 1 55 55
James Aerodynamics 1 90 90
我想通过使用 SUM(总计( 在表中添加所有总计的总和,如下所示:
SELECT Member.Name, Book.Title AS BookBought, Order_Member_Det.Quantity, Order_Member_Det.Price, Order_Member.Total, **SUM(Order_Member.Total)**
FROM Order_Member
INNER JOIN OrderWithMember ON Order_Member.OrderID = OrderWithMember.OrderID
INNER JOIN Order_Member_Det ON OrderWithMember.MemberOrderID = Order_Member_Det.MemberOrderID
INNER JOIN Member ON OrderWithMember.MemberID = Member.MemberID
INNER JOIN Book ON Order_Member_Det.BookID = Book.BookID
但是后来我得到一个错误:
Msg 8120,级别 16,状态 1,第 264
行 列 'Member.Name' 在选择列表中无效,因为它不包含在聚合函数或 GROUP BY 子句中。
但是如果我像这样用这样的总和创建新的选择,它可以工作:
SELECT SUM(Total) From Order_Member;
它可以生成此输出:
ColumnName
665
那么我如何在给定的情况下组合两个选择,我也使用了 INNER JOIN,所以子查询在这里可能不起作用。有什么想法吗?
这也应该有效(未经测试(
with cte as
(
SELECT Member.Name, Book.Title AS BookBought,
Order_Member_Det.Quantity, Order_Member_Det.Price, Order_Member.Total
FROM Order_Member
INNER JOIN OrderWithMember ON Order_Member.OrderID = OrderWithMember.OrderID
INNER JOIN Order_Member_Det ON OrderWithMember.MemberOrderID = Order_Member_Det.MemberOrderID
INNER JOIN Member ON OrderWithMember.MemberID = Member.MemberID
INNER JOIN Book ON Order_Member_Det.BookID = Book.BookID
)
select *, (select sum(total) from cte) as SumTotal
from cte
在 SQL Server 中,您可以使用窗口函数执行此操作:
SELECT m.Name, b.Title AS BookBought, omd.Quantity, omd.Price, om.Total,
SUM(Order_Member.Total) OVER (PARTITION BY m.MemberId) as MemberTotal
FROM Order_Member om INNER JOIN
OrderWithMember owm
ON om.OrderID = owm.OrderID INNER JOIN
Order_Member_Det omd
ON owm.MemberOrderID = omd.MemberOrderID INNER JOIN
Member m
ON owm.MemberID = m.MemberID INNER JOIN
Book b
ON omd.BookID = b.BookID;