Question

每个值的总和列更改foxpro中另一个字段的值。我怎样才能得到添加剂柱？我能够进行总计，但是对于所有项目，我怎样才能在每次项目更改时开始？

E.g。

Item Number      QTY     ADDITIVE
1045             50           50
1045             25           75
1045             35          110
2045             50           50
2045             50          100 
2045             25          125
3056             30           30
3056             30           60
3056             30           90

Answer 1

它看起来像简单的添加剂，但您如何计划存储并向最终用户呈现结果...在网格中或每个单独项目的最终运行总计？看起来这可能代表销售订单商品/销售数量。我可能会查询按项目排序的读/写游标，然后应用扫描循环来更新每个...类似于。

select ItemNumber, Qty, 000000 as RunningTotal ;
   from YourTable ;
   order by ItemNumber ;
   into cursor C_Sample readwrite

lastItem = ""
runTotal = 0
scan
   */ If different item, reset running total back to zero
   if lastItem != ItemNumber
      runTotal = 0
   endif
   */ Update running total   
   runTotal = runTotal + Qty
   */ Update the record column
   replace RunningTotal with runTotal
   */ preserve the ID we just processed for comparison to next record
   lastItem = ItemNumber
endscan 

*/ Done...

每个值的总和列在foxpro中另一个字段的变化

1 个答案: