Array Formula to Combine Text with Unique Condition
I have a list of customers and the products they bought.
I want to combine every product that each customer bought into respectively a single cell next to customers' name.
Is there any way with array formula that can do this? The formula is expected to be a single formula that can automatically return the value when new data is input, so I think it should be an array formula.
Here is the sample case
https://docs.google.com/spreadsheets/d/1GpCbpFz7wrZjamhtm9rHk38RgyAUCBx54BeQCIeG1H4/edit#gid=0
The expected return can be seen in E:E. But the expected formula shouldnt be like that since it is kinda painful to drag formulas all over when I input new data, it is expected to be like an array formula.
Erase contents in D:E and then enter in D1
=arrayformula(regexreplace({unique(A1:A), trim(transpose(query(if((transpose(unique(A1:A))=A1:A)*len(A1:A),B1:B&" - ",),,50000)))},"-$", ))
See if that works?
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