I am using STATA 15. I have a large data set with multiple columns and rows. I am interested in two variables , var1 and var2, each of which have multiple entries. I would like to rename var1 with the same name as var2. However, when I use the code rename var1 var2, I receive the error message variable var2 already defined. When I use the code rename (var1 var2) (var3 var3), I get the following error message: 1 new name specified repeatedly in newname. You requested the name var3 be assigned to 2 existing variables: var1 and var2.

How can I make the two columns of data with the two different variable names both have the same name?

Thank you.