looking for excel formula combining columns and rows -

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imagine spreadsheet 4 columns: b c d

if b column equal d column, want in column result of column c example: if b2 equal d2, a2 value should c2 value if not equal should show empty or false or something

i have uploaded sample spreadsheet

what formula use?

in cell a2, put:

=if(b2=d2,c2,false)

and fill down other rows.

the logic should simple enough understand. , can type in else instead of false if want.

edit:

as per amendment of problem:

  1. first move column d before column c (meaning email in column c , log in column d)
  2. in cell a2, put formula =vlookup(b2,c:d,2,0)
  3. fill formula down.

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