What formula should I use to compare duplicate data between worksh

[genoq]

I have a workbook with 2 spreadsheets, each with containing a list of part
numbers. On the second spreadsheet, I want to compare lists and identify
duplicates from the first list, without changing the sorted order of either
list. What is the easiest way to flag these duplicates on sheet 2

 

[Bob Phillips]

Use a helper column with a formula. Assuming key in column A on Sheet1 and
Sheet2, then use

=IF(COUNTIF(Sheet1!A:A,A1)>0,"Duplicate","")

and copy down

--

HTH

RP
(remove nothere from the email address if mailing direct)

 

[genoq]

Thanks! =) Happy New Year!

Use a helper column with a formula. Assuming key in column A on Sheet1 and
Sheet2, then use

=IF(COUNTIF(Sheet1!A:A,A1)>0,"Duplicate","")

and copy down

--

HTH

RP
(remove nothere from the email address if mailing direct)

 

[Aladin Akyurek]

A fast way of flagging common items (duplicates, as you call it) between
Sheet2 and Sheet1 would be:

=--ISNUMBER(MATCH(A1,Sheet1!A:A,0))

1 means duplicate, 0 not.