I have a list of people who belong to two groups (A or B). I want to create a column which lists all the people who belong to group A. I have been trying to come up with an array formula but I do not have a working example. Any help appreciated!
Names | Group | Desired Output
Bob | A | Bob
Fred | B | Eric
Matt | B | Dave
Eric | A | Fred
Dave | A |
Stew | B |
Fred | A |
Many Thanks in advance
Normal formula for column C:
C2=
=IFERROR(INDEX(A:A,AGGREGATE(15,6,ROW(B:B)/(B:B="A"),ROW()-1)), "")
Copy/paste down in column C for a sufficient number of cells.
Array formula: select a sufficient number of cells in column C and write the same formula in the formula bar then press Ctrl+Shift+Enter
=IFERROR(INDEX($A$1:$A$100,AGGREGATE(15,6,ROW($B$1:$B$100)/($B$1:$B$100="A"),ROW()-1)), ""). Also try not putting it in a too large number of cells, just what is sufficient to get all the matches.From this
+---+-------+-------+
| | A | B |
+---+-------+-------+
| 1 | Name | Group |
| 2 | Nick | A |
| 3 | Marc | A |
| 4 | Manny | B |
| 5 | Luck | A |
+---+-------+-------+
you can create two pivot tables with Name in the row label and Group in the filter data. Then you can filter only people depending on the group.
+---+-------------------+---+
| | A | B |
+---+-------------------+---+
| 1 | Group | A |
| 2 | | |
| 3 | Etichette di riga | |
| 4 | Luck | |
| 5 | Marc | |
| 6 | Nick | |
+---+-------------------+---+
So if your data is in range A1:B7 this would be the formula:
=IFERROR(INDEX($A$1:$A$7,SMALL(IF($B$1:$B$7="A",ROW($A$1:$A$7)-ROW($A$1)+1),ROWS($A$1:A1))),"")
This is array formula that is applied with Ctrl + Shift + Enter and you will need to drag it down.
Ctrl + Shift + Enter. Because your issue is real only if you use just Enter.