List Unique Names in A Column (Excel 2000)

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Is there anyway to list, automatically, the unique Strings in a second column ? In other words, if A1:A10 contains a,b,c,d,d,d,e,e,f,f,, is there a way to list in B1:B6 a,b,c,d,e,f ? I understand you can use filter, but filter does not provide automatic calculation. Is a a dynamic way to do the above without filter or VBA, just using formulas ?

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Enter this ARRAY formula into (eg) B1:
=INDEX(A1:A10,SMALL(IF((ROW(INDIRECT(“1:10”))=MATCH(A1:A10,A1:A10,0)),ROW(INDIRECT(“1:10″)),””),ROW(INDIRECT(“1:10”))))

Select B1:b10, hit F2, ctrl-shift-enter will then fill in B1:b10 with the unique list (where they do not fill in you will get #Num error).

The list is live. If you change A1:a10 you must also change the “1:10” to reflect the number of rows in the set.

If you name A1:A10 to LIST you can use the array:
=INDEX(List,SMALL(IF((ROW(INDIRECT(“1:”&ROWS(List)))=MATCH(List,List,0)),ROW(INDIRECT(“1:”&ROWS(List))),””),ROW(INDIRECT(“1:”&ROWS(List)))))

And this will keep track of the number of rows required. You still must expand the length of the array to cover all the unique items.

Steve

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Steve,
This is great. Many thanks !

TQ

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