如何计算sql Server 2008中的运行平衡

Question

如何在Sql Server 2008中计算破坏余额。 我正在使用以下查询在sql server 2012中完美地工作，但在sql server 2008中没有。

SELECT empid, tentryno, glcode, descript, linenarrat, ttype, amount, tapplid, ftype, mentryno, mthttype, entrydate, ref, refdate, remarks, narrat, postflag, mapplid, mtype, post, acctheadcode, accthead, subacctheadcode, subaccthead
       , CASE 
        WHEN ttype = 'D'
            THEN amount
        ELSE 0.00
        END AS Debit, CASE 
        WHEN ttype = 'C'
            THEN amount
        ELSE 0.00
        END AS Credit, SUM(CASE 
            WHEN ttype = 'D'
                THEN amount
            ELSE amount * - 1
            END) OVER (
        PARTITION BY glcode ORDER BY tseqid
        ) AS balance, STATUS, receid, system.title, dbo.system.address, dbo.system.phone1, dbo.system.phone2, dbo.system.fax, dbo.system.signimage, dbo.system.logo
FROM CreditDebitDetails
CROSS JOIN system
WHERE STATUS != 0