excel - Adding in information from one spreadsheet to another -

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good morning,

i have spreadsheet 40,000 products , spreadsheet 35,000 products item id's

is there anyway can add in missing 5,000 item id's using forumla? dont want manually go through each item , see missing

thank time , help

cheers

if columna holds unique id's in each sheet please try: 

=countif(sheet1!a:a,a1)

in sheet2 and

 =countif(sheet2!a:a,a1)

in sheet1, both copied down suit.

then sort both on results of these columns , copy result in 0 1 sheet other ensure complete sets in both sheets , check whether either sheet has duplicates.


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