SQL Server syntax error message ('INCORRECT SYNTAX NEAR =') in a query

hi, i am trying to run the following query in SQL Server 2005 Express SSME. It keeps giving me error "Syntax error near =" in the CASE statement (which is in the WHERE clause). I dont understand why...

I know it must be something pretty simple, but i cant understand what. I need ti urgently and so am offering 500points here.

Let me know if you need more info plss..


SELECT ACCOUNTS.AccountLevel, ACCOUNTS.AccountName, SALESHEADER.OrderDate, SALESHEADER.DeliveryDate, SALESHEADER.SalesHDRID, 
SALESHEADER.PrivateOrderNumber, Sum(CASE WHEN (SALESDETAIL.PackerID Is Not Null And SALESDETAIL.PackerTime Is Not Null Or 
SALESDETAIL.Quantity Is Null Or SALESDETAIL.Quantity=0) THEN 0 ELSE 1 END) AS [Left], Sum((CASE WHEN ([SALESDETAIL].[CheckerID] Is Not Null 
And [SALESDETAIL].[CheckerTime] Is Not Null Or [SALESDETAIL].[Quantity] Is Null Or [SALESDETAIL].[Quantity]=0) THEN 0 ELSE 1 END)) AS NotChecked
FROM ITEMS INNER JOIN (ACCOUNTS INNER JOIN (SALESHEADER INNER JOIN SALESDETAIL ON SALESHEADER.SalesHDRID = SALESDETAIL.SalesHDRID) 
ON ACCOUNTS.AccountID = SALESHEADER.AccountID) ON ITEMS.ItemID = SALESDETAIL.ItemID
 
WHERE (CASE WHEN ACCOUNTS.DeliveryAccountID Is Null THEN (ACCOUNTS.ParentAccountID = 8322) ELSE (ACCOUNTS.DeliveryAccountID = 8322) END)
and SALESHEADER.InvoiceStatusID = 'OR'
 
GROUP BY SALESHEADER.AccountID, ACCOUNTS.AccountLevel, ACCOUNTS.AccountName, SALESHEADER.OrderDate, SALESHEADER.DeliveryDate, 
SALESHEADER.SalesHDRID, SALESHEADER.PrivateOrderNumber, SALESHEADER.InvoiceStatusID, SALESHEADER.OrderComment
ORDER BY SALESHEADER.DeliveryDate, ACCOUNTS.AccountName

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kalbalAsked:
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Guy Hengel [angelIII / a3]Billing EngineerCommented:
your WHERE condition is wrong:
 WHERE (CASE WHEN ACCOUNTS.DeliveryAccountID Is Null THEN (ACCOUNTS.ParentAccountID = 8322) ELSE (ACCOUNTS.DeliveryAccountID = 8322) END)
must read: 
 WHERE ( ISNULL( ACCOUNTS.DeliveryAccountID, ACCOUNTS.ParentAccountID) = 8322 )

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Guy Hengel [angelIII / a3]Billing EngineerCommented:
note: please check out your SUM(CASE ...) statements, you mix AND and OR conditions without () , that will give you wrong results.
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Query Syntax

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