Find and Compare Two Columns Excel (With Screenshots) -
i have spreadsheet new data don't know contents of, have add spreadsheet. of new data updating rows in spreadsheet, , other data adding new rows. i'm looking way add column tell me if has changed in row when compare old spreadsheet new one.
the sheets have 1 column have unique value among rows, can use match rows if sheets aren't sorted same way. here screenshots show i'm trying do:
old spreadsheet:

new spreadsheet:

the solution can think of large nested if formula compares each column 1 one, like:
=if(old!b2=new!b2,if(old!c2=new!c2,"no","yes"),"yes") the problem gets hard @ since actual data using 33 columns (not including "changed?" column) , new columns added in future.
i'm not technical excel, nor have ever used vba, apologize in advance if there simple/obvious solution i'm missing.
thanks in advance help.
using example, in 'new' sheet cell d2 , copied down:
=if(countif(old!a:a,a2)=0,"yes",if(sumproduct(countif(index(old!a:ag,match(a2,old!a:a,0),0),left(a2:ag2,254)&"*"))=sumproduct(countif(a2:ag2,left(a2:ag2,254)&"*")),"no","yes"))
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