Assuming the the primary first name is column A, secondary first name in
column B, primary last name in column C, secondary last name in column
D, and further assuming that by "the cell" you mean the secondary last
name:

E1: =IF(OR(C1=D1,D1=""),A1 & "&" & C1,"")




In article ,
"Linda G" <Linda wrote:

I am working with database files where the primary first name, secondary
first name and primary last name and secondary last name are in separate
columns.

What I need is a formula the will concatenate the Primary first and Primary
last with an "&" sign inbetween if the primary last and the secondary last
are the same or the cell is blank.