What would be a good approach to report of all the dates a name occurs in a list? Can this be done with a single array formula?
Example (column A and B are input, columns C through G are to be auto-generated):
| A | B | C | D | E | F | G |
+---------+--------+--------+---------+---------+---------+---------+
| Episode | Stars | Name | Date | Date | Date | Date |
+---------+--------+--------+---------+---------+---------+---------+
| 7/24/15 | Bart | Bart | 7/24/15 | 7/18/15 | 8/15/15 | 3/29/15 |
| 8/09/15 | Maggie | Homer | 1/10/15 | | | |
| 7/24/15 | Marge | Lisa | 7/20/15 | 6/04/15 | | |
| 7/18/15 | Bart | Maggie | 8/09/15 | | | |
| 1/10/15 | Homer | Marge | 7/24/15 | | | |
| 8/15/15 | Bart | | | | | |
| 7/20/15 | Lisa | | | | | |
| 6/04/15 | Lisa | | | | | |
| 3/29/15 | Bart | | | | | |
|^^^^^^|
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| (o)(o)
@ _)
| ,___| - Thanks Dude!
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I don't think this is easily possible in a single arrayformula. However, as an alternative you could try this formula in cell C2:
=SORT(UNIQUE(QUERY(FILTER(B$2:B,LEN(B$2:B)))),1,1)
Then try this formula in cell D2 and drag down:
=TRANSPOSE(QUERY(A$2:B,"select A where B='"&C2&"'"))
See this example sheet to see it working: https://docs.google.com/spreadsheets/d/1LRfZyxTd65gAcK92rr0JYrZLC2DG7W-75hwAsoYp-kg/edit?usp=sharing