在sql 2000中分配值

Question

#tempR 表

iPriority_num    GCAMOUNT
221143           2000.00
221255           1500.00

#tempV 表

iPriority_num  sPlu_cd  iDetail_num siTem_cd   ITEMAMOUNT
221143          0660     1           ACN00660    6000.00
221255          0112     1           CON00112     500.00
221255          0134     2           HAI00134     750.00
221255          0851     3           FPR50074     249.00
221255          0008     4           FNU30200     300.00
221255          0856     5           MICO0001     297.00

这是我的脚本

SELECT t.iPriority_num as [TransactionID]
,t.iDetail_num as [Order ID],t.sPlu_cd AS [ItemCode]
,t.ITEMAMOUNT
,d.GCAMOUNT as [GC Payment]
,CASE WHEN d.GCAMOUNT < t.ITEMAMOUNT 
THEN (d.GCAMOUNT / CAST((SELECT COUNT(*) as cnt FROM #tempV t2 where t.iPriority_num = t2.iPriority_num) AS decimal(10,2))) 
ELSE
d.GCAMOUNT − t.ITEMAMOUNT
END AS DistributedAmt
FROM #tempV t
INNER JOIN #tempR dON d.iPriority_num = t.iPriority_num

结果

TransactionID   OrderID  ItemCode   ITEMAMOUNT   GC Payment    DistributedAmt
221143          1      0660        6000.00      2000.00         2000.00
221255          1      0112        500.00       1500.00         1000.00
221255          2      0134        750.00       1500.00          750.00
221255          3      0851        249.00       1500.00         1251.00
221255          4      0008        300.00       1500.00         1200.00
221255          5      0856        297.00       1500.00         1203.00

期望的输出

TransactionID   OrderID  ItemCode   ITEMAMOUNT   GC Payment    DistributedAmt
221143          1      0660        6000.00      2000.00         2000.00      
221255          1      0112        500.00       1500.00          500.00
221255          2      0134        750.00       1500.00          750.00
221255          3      0851        249.00       1500.00          249.00 
221255          4      0008        300.00       1500.00            1.00
221255          5      0856        297.00       1500.00            0.00

我想要的只是如果项目金额小于GC付款，则分配每个项目的金额

Answer 1

这个东西在sql server 2000中通常需要游标或者三角连接。

一个潜在的解决方案：

select *
into #tempR
from (
    SELECT  221143, 2000.00
    UNION ALL   
    SELECT  221255, 1500.00
) t (iPriority_num,GCAMOUNT)

select *
into #tempV
from (
     SELECT 221143, N'0660', 1, N'ACN00660', 6000.00
    UNION ALL SELECT 221255, N'0112', 1, N'CON00112', 500.00
    UNION ALL SELECT 221255, N'0134', 2, N'HAI00134', 750.00
    UNION ALL SELECT 221255, N'0851', 3, N'FPR50074', 249.00
    UNION ALL SELECT 221255, N'0008', 4, N'FNU30200', 300.00
    UNION ALL SELECT 221255, N'0856', 5, N'MICO0001', 297.00
) t (iPriority_num,sPlu_cd,iDetail_num,siTem_cd,ITEMAMOUNT)


select  *
,   CASE WHEN DistributedAmt < 0 THEN 0 ELSE DistributedAmt END AS FinalDistributedAmount
from    (
        select  t.*
        ,   case 
                when r.GCAMOUNT >= (SELECT SUM(itemamount) FROM #tempV v where v.iPriority_num = t.iPriority_num AND v.iDetail_num <= t.iDetail_num) THEN t.ItemAmount
                ELSE r.GCAmount - ISNULL((SELECT SUM(itemamount) FROM #tempV v where v.iPriority_num = t.iPriority_num AND v.iDetail_num < t.iDetail_num), 0)
            END AS DistributedAmt
        from #tempV t
        INNER JOIN #tempR r
            ON  r.iPriority_num = t.iPriority_num
    ) x

可以通过执行

(SELECT SUM(itemamount) FROM #tempV v where v.iPriority_num = t.iPriority_num AND v.iDetail_num <= t.iDetail_num)

子查询来生成运行总和，然后与要分配的原始金额的剩余部分进行比较。

不幸的是，它需要一些重复，你应该考虑升级到更现代的版本