Array formula for unique entries

[Martina]

Dear Experts,
I know how to filter a list of data for unique entries using the advanced
filter however I want to have it happen without user intervention.

Can I use an array formula to pick out unique entries from a predetermined
list and display them in adjacent columns?

regards
Martina

 

[Mike H]

You could put this in a helper column next to your list and drag down.

=IF(COUNTIF($A$1:$A$100,A1)=1,A1,"")

Unique items will be listed in the helper column

Mike

 

[Bob Phillips]

Use Data>Filter>Advanced Filter, it has a uniques option.

--
HTH

Bob

(there's no email, no snail mail, but somewhere should be gmail in my addy)

 

[ilia]

The John Walkenbach method:

=INDEX($A$1:$A$100,SMALL(IF(MATCH($A$1:$A$100,$A$1:$A
$100,0)=ROW(INDIRECT("1:"&ROWS($A$1:$A$100))),MATCH($A$1:$A$100,$A$1:$A
$100,0),""),ROW(INDIRECT("1:"&ROWS($A$1:$A$100)))))

In this case you're working with the range $A$1:$A$100, whereas
generally you would have an expanding named range and a bit of error
checking.

 

[Martina]

Dear Experts,
I know how to filter a list of data for unique entries using the advanced
filter however I want to have it happen without user intervention.

Can I use an array formula to pick out unique entries from a predetermined
list and display them in adjacent columns?

regards
Martina

Thanks everyone for your help. My sheet is working now.
regards
Martina