列无效或在我的查询中分组

Question

我正在开展一个项目，我必须在其中展示产品和数量。

这是我的疑问：

select DATEDIFF(month,T3.startdate,T3.enddate) warranty_duration, 
T2.ItemCode,T2.Quantity,T2.SerialNum,T4.ItemName,T2.SerialNum as 
InternalSN,T3.ContractID,T3.issend,
T3.StartDate,T3.EndDate,T3.Remarks1 from ORDR T1
inner join RDR1 T2 on T1.DocEntry=T2.DocEntry 
inner join OCTR T3 on T1.CardCode=T3.CstmrCode
inner JOIN OITM T4 ON T2.ItemCode=T4.ItemCode
WHERE (DATEDIFF(day,getdate(),T3.enddate)<=7 and 
DATEDIFF(day,getdate(),T3.enddate)>=0)
and T3.isSend=0
and T4.SWW in ('PSG','IPG-H','ESSN-N','ESSN-ISS','ESSN-HPN','ESSN-
BCS','EABMS')
and t3.contractID = 23890 

我的查询显示如下结果：

我想这样表现出来：

Answer 1

select DATEDIFF(month,T3.startdate,T3.enddate) warranty_duration, 
T2.ItemCode,T2.Quantity,T2.SerialNum,T4.ItemName,T2.SerialNum as 
InternalSN,T3.ContractID,T3.issend,
T3.StartDate,T3.EndDate,T3.Remarks1 from ORDR T1
inner join RDR1 T2 on T1.DocEntry=T2.DocEntry 
inner join OCTR T3 on T1.CardCode=T3.CstmrCode
inner JOIN OITM T4 ON T2.ItemCode=T4.ItemCode
WHERE (DATEDIFF(day,getdate(),T3.enddate)<=7 and 
DATEDIFF(day,getdate(),T3.enddate)>=0)
and T3.isSend=0
and T4.SWW in ('PSG','IPG-H','ESSN-N','ESSN-ISS','ESSN-HPN','ESSN-
BCS','EABMS')
and t3.contractID = 23890 
GROUPBY T2.ItemCode

Answer 2

  

GROUP BY productName

（在数据库中将粗体值更改为您自己的值）应该可以解决问题。