需要幫助搞清楚什麼是錯我的代碼

Question

1. 我想要一個結果集，會告訴我由供應商分組的發票。
2. 我想要一個結果集，會告訴我的供應商，他們已經爲了開發票從最低金額開具發票發票量最多的總量。
3. 我想要的結果集，其中顯示了一個總金額超過$ 2000.00更大的供應商，他們已開具發票的總金額。

Select * from Invoices group by VendorID; 

Select Vendors.VendorID,Vendors.VendorName,sum(Invoices.InvoiceTotal) 
from Vendors inner join Invoices on Vendors.VendorID = Invoices.VendorID group by Vendors.VendorID order by sum(Invoices.InvoiceTotal); 


Select Vendors.VendorID,Vendors.VendorName,sum(Invoices.InvoiceTotal) 
from Vendors inner join Invoices on Vendors.VendorID = Invoices.VendorID group by Vendors.VendorID having sum(Invoices.InvoiceTotal) > 2000; 

此代碼給了我同樣的錯誤：

Msg 8120, Level 16, State 1, Line 2

Column 'Invoices.InvoiceID' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

Msg 8120, Level 16, State 1, Line 4

Column 'Vendors.VendorName' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

Msg 8120, Level 16, State 1, Line 8

Column 'Vendors.VendorName' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

Answer 1

嘗試讓子查詢的連接

Select * from 
(Select Vendors.VendorID, Vendors.VendorName, sum(Invoices.InvoiceTotal) as total 
from Vendors inner join Invoices on Vendors.VendorID = Invoices.VendorID) 
as T1 group by T1.VendorID order by T1.total; 

Answer 2

＃1：對我來說由分組供應商可能意味着order by vendorID或者更可能的一種簡單COUNT。

＃2 & 3：你要添加Vendors.VendorName到GROUP BY列表