问题
Is it possible to filter an array using a single formula (without autofilter, VBA, or additional columns)?
For example, I have the following spreadsheet:
A | B | C
--------------------
1| ID | Class | Value
2| 1 | A | V1
3| 1 | B | V2
4| 2 | A | V3
5| 3 | B | V4
6| 3 | B | V5
I want to use a subset of this array in VLOOKUP. Namely, I only want to match against those rows where class is "B". So I was hoping I could use something like the following
=VLOOKUP(A3, FILTER_FUNC(A:C, B="B"), 3, false)
where FILTER_FUNC is some type of function or expression that returns an array that only contains those rows that meet the condition.
回答1:
=VLOOKUP(A2,IF(B1:B3="B",A1:C3,""),1,FALSE)
Ctrl+Shift+Enter to enter.
回答2:
This will do it if you only want the first "B" value, you can sub a cell address for "B" if you want to make it more generic.
=INDEX(A2:A6,SUMPRODUCT(MATCH(TRUE,(B2:B6)="B",0)),1)
To use this based on two columns, just concatenate inside the match:
=INDEX(A2:A6,SUMPRODUCT(MATCH(TRUE,(A2:A6&B2:B6)=("3"&"B"),0)),1)
回答3:
Sounds like you're just trying to do a classic two-column lookup. http://www.dailydoseofexcel.com/archives/2009/04/21/vlookup-on-two-columns/
Tons of solutions for this, most simple is probably the following (which doesn't require an array formula):
=SUMPRODUCT((Lookup!A:A=Param!A1)*(Lookup!B:B=Param!B1)*(Lookup!C:C))
To translate your specific example, you would use:
=SUMPRODUCT((A1:A3=A2)*(B1:B3="B")*(C1:C3))
来源：https://stackoverflow.com/questions/6497062/filter-an-array-using-a-formula-without-vba