我是“GROUP BY”功能的新手。请告诉我我对此错误消息的不理解。 :o) 谢谢,RL
Select
Rep.Vendor.VendorName,
Sum(Rep.PurchaseOrderLine.ExtendedAmount)
From Rep.PurchaseOrder
LEFT JOIN Rep.PurchaseOrderLine
ON Rep.PurchaseOrder.PurchaseOrder = Rep.PurchaseOrderLine.PurchaseOrder
LEFT JOIN Rep.Vendor
ON Rep.Vendor.Vendor = Rep.PurchaseOrder.Vendor
Where Rep.PurchaseOrder.PurchaseOrderDate between '2020-01-01' and '2020-03-31'
Group By Rep.Vendor.VendorName
Order By Rep.PurchaseOrderLine.ExtendedAmount
------------------------*/
消息 8127,级别 16,状态 1,第 16 行 ORDER BY 子句中的“Rep PurchaseOrderLine ExtendedAmount”列无效,因为它既不包含在聚合函数中,也不包含在 GROUP BY 子句中。