title: How to rename variables without using their original names?
body: <p>I have a data set that I am uploading to sas. There are always 4 variables in the exact same order.  The problem is sometimes the variables could have slightly different names. </p>
  
  <p>For example the first variable <code>user</code> . The next day i get the same dataset, it might be <code>userid</code> . .  . So I cannot use <code>rename(user=my_user)</code> </p>
  
  <p>Is there any way i could refer to the variable by their order . . something like this</p>
  
  <p><code>rename(var_order_1=my_user) ;</code></p>
  
  <p><code>rename(var_order_3=my_inc) ;</code> </p>
  
  <p><code>rename _ALL_=x1-x4 ;</code>  </p>