如何在 Excel 中为函数创建引用变量？

Question

试图使变量在函数中起作用。这是如何做： 我有一个所得税计算器。它工作完美。如果我要使用 SUMPRODUCT，我也可以获得正确的值（如果我使用累积表，甚至是 VLOOKUP，但现在是 nvm；只要知道我也尝试过 VLOOKUP）。

SUMPRODUCT 公式如下：

=SUMPRODUCT(A4:A10-A3:A9,E1-C4:C10,N(E1>C4:C10))

我希望能够将 E1 替换为“x”，这样我就可以创建一个公式，所以 =Tax(E1) 会给我与 SUMPRODUCT 公式相同的结果。 问题是我不知道如何使用“x”作为变量。

使用=LET(x, E1, SUMPRODUCT(A4:A10-A3:A9,x-C4:C10,N(x>C4:C10))) 确实给出了正确的值。从这里我想把它变成一个更简单的公式，我可以通过公式 =Tax(E1) 或 E1 以外的任何单元格将“E1”动态更改为任何内容。

Picture of table with SUMPRODUCT formula

--------- 编辑 --------- 我最终研究了 SUMPRODUCT 函数并真正了解它是如何工作的，然后在谷歌上搜索了一堆 VBA 的东西。最后只是制作了一个处理整个事情的 VBA 函数。这是以防万一有人需要它：

Dim Rate1 As Single
Dim Rate2 As Single
Dim Rate3 As Single
Dim Rate4 As Single
Dim Rate5 As Single
Dim Rate6 As Single
Dim Rate7 As Single

Dim Over1 As Single
Dim Over2 As Single
Dim Over3 As Single
Dim Over4 As Single
Dim Over5 As Single
Dim Over6 As Single
Dim Over7 As Single

Dim Amount1 As Single
Dim Amount2 As Single
Dim Amount3 As Single
Dim Amount4 As Single
Dim Amount5 As Single
Dim Amount6 As Single
Dim Amount7 As Single

Dim Tax1 As Single
Dim Tax2 As Single
Dim Tax3 As Single
Dim Tax4 As Single
Dim Tax5 As Single
Dim Tax6 As Single
Dim Tax7 As Single

Dim Final As Single




Function Tax(Value As Single)
    Rate1 = 0.1
    Rate2 = 0.02
    Rate3 = 0.1
    Rate4 = 0.02
    Rate5 = 0.08
    Rate6 = 0.03
    Rate7 = 0.02
    
    Over1 = 0
    Over2 = 9951
    Over3 = 40526
    Over4 = 86376
    Over5 = 164926
    Over6 = 209426
    Over7 = 523601
    
    Amount1 = Value - Over1
    If Amount1 > 0 Then
        Tax1 = Amount1 * Rate1
        Final = Tax1
        Amount2 = Value - Over2
    Else
        Amount2 = 0
    End If
    If Amount2 > 0 Then
        Tax2 = Amount2 * Rate2
        Final = Final + Tax2
        Amount3 = Value - Over3
    Else
        Amount3 = 0
    End If
    If Amount3 > 0 Then
        Tax3 = Amount3 * Rate3
        Final = Final + Tax3
        Amount4 = Value - Over4
    Else
        Amount4 = 0
    End If
    If Amount4 > 0 Then
        Tax4 = Amount4 * Rate4
        Final = Final + Tax4
        Amount5 = Value - Over5
    Else
        Amount5 = 0
    End If
    If Amount5 > 0 Then
        Tax5 = Amount5 * Rate5
        Final = Final + Tax5
        Amount6 = Value - Over6
    Else
        Amount6 = 0
    End If
    If Amount6 > 0 Then
        Tax6 = Amount6 * Rate6
        Final = Final + Tax6
        Amount7 = Value - Over7
    Else
        Amount7 = 0
    End If

    
    
    
    Tax = Value - Final
End Function

Answer 1

如果您有 Excel 365，您现在可以使用 Lambda General description Examples 来定义没有 VBA 的函数。原则上它与 Let 几乎相同：

=LAMBDA(x, SUMPRODUCT(Sheet1!A4:A10-Sheet1!A3:A9,x-Sheet1!C4:C10,N(x>Sheet1!C4:C10)))

但实际上，您需要将引用设为绝对引用，否则公式会根据您调用它的位置而改变：

=LAMBDA(x, SUMPRODUCT(Sheet1!$A$4:$A$10-Sheet1!$A$3:$A$9,x-Sheet1!$C$4:$C$10,N(x>Sheet1!$C$4:$C$10)))

这是您在名称管理器中定义它的方式：

然后你可以简单地放

=Tax(E1)

在任何单元格中。

请注意，您可能需要订阅Office Insider 程序才能访问此功能，正如@Jos Woolley 所述。