Sql 要求按子句分组，但不允许

我正在尝试在where子句中包括对MAX date范围的选择。我正在使用必须将其引入，但它错误地指出，

“列'dbo.PURCHLINE.PURCHID'在选择列表中无效，因为它既不包含在聚合函数中，也不包含在GROUP BY子句中。”

但它不允许我分组，并引发其他错误。也许我是走错路了。基本上，我需要在一组列中获取此查询的最新日期：

Select 
    PURCHLINE.PURCHID as 'PO'
    ,SUBSTRING(Cast(Max(VENDPACKINGSLIPJOUR.DELIVERYDATE) as varChar), 0, 12) as 'DeliveryDate'
    ,PURCHLINE.QTYORDERED as 'QtyOrdered'
FROM dbo.PURCHLINE 
    INNER JOIN dbo.INVENTTABLE 
        ON dbo.PURCHLINE.ITEMID = dbo.INVENTTABLE.ITEMID 
    INNER JOIN dbo.INVENTITEMGROUP 
        ON dbo.INVENTTABLE.ITEMGROUPID = dbo.INVENTITEMGROUP.ITEMGROUPID 
    INNER JOIN dbo.INVENTPOSTING 
        ON dbo.INVENTITEMGROUP.ITEMGROUPID = ITEMRELATION 
    INNER JOIN dbo.PURCHTABLE 
        ON dbo.PURCHLINE.PURCHID = dbo.PURCHTABLE.PURCHID 
    INNER JOIN dbo.LEDGERTABLE 
        ON LEDGERACCOUNTID = ACCOUNTNUM 
    INNER JOIN VENDPACKINGSLIPJOUR 
        on VENDPACKINGSLIPJOUR.PURCHID = PURCHLINE.PURCHID
WHERE
    dbo.PURCHLINE.PURCHSTATUS = 3 --open Order
    AND dbo.PURCHLINE.PURCHASETYPE = 3 --Purchase Order
    AND dbo.PURCHLINE.DIMENSION IN (@department)
    AND INVENTACCOUNTTYPE = 0 --Purchase Packing Slip
    AND PURCHLINE.DIMENSION2_ = @division
    HAVING Max(VENDPACKINGSLIPJOUR.DELIVERYDATE) between @start and @end

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您有一个聚合，因此需要在非聚合字段上分组：

GROUP BY
     PURCHLINE.PURCHID
    ,PURCHLINE.QTYORDERED

---

这在

HAVING

子句之前。

生成错误的group by子句是什么样子的？是不是简单的“按PURCHLINE.PURCHID分组，子字符串（…），PURCHLINE.QTYORDERED”？按PURCHLINE.PURCHID分组我首先尝试了，它在关键字“GROUP”附近说了不正确的语法。“分组依据”是在有条款D之后，当您将所选字段复制到“分组依据”字段中时，是否取出“作为采购订单”和“作为交货日期”等部分？您能显示生成错误的代码吗？您确定分组是正确答案吗？按

PURCHID

分组将为每个值提供一个结果，而按

QTYORDERED

分组似乎很奇怪。