我试图将我的数据看作：
|SalesID|ItemSequence|ItemCodes|ItemType|
| 123 | 000001 | Sheet | Main |
| 123 | 000002 | Blue Dye| Add on |
| 123 | 000003 |Cut Sheet| Add on |
| 123 | 000004 | Sheet | Main |
| 123 | 000005 |Cut Sheet| Add on |
看起来像
|SalesID|ItemSequence|ItemCodes| Addon1 | Addon2 |
| 123 | 000001 | Sheet |Blue Dye |Cut Sheet|
| 123 | 000002 | Sheet |Cut Sheet| |
我目前正在尝试使用效果不佳的IIf语句。
IIf([ItemSequence] = "000001" and [ItemType] = "Main", IIf([ItemSequence] =
"000002" and [ItemType] = "Add on", [ItemCodes] = [Addon1] and
IIf([ItemSequence] = "000003" and [ItemType] = "Main",[Addon2] = "",
[Addon2] = [ItemCodes]......
这个已经非常长的IIf语句必须继续，具体取决于SalesID列出了多少项。我正在寻找一种正确的方法来做到这一点，不涉及一个50,000字的IIf语句，可能在完成时不起作用。