title: How to lookup in column and return the column letter (not full address or column number) using single function?
body: <p>When using <code>hlookup()</code>, it will return the col number so need another function to convert to the letter. </p>
  
  <p>Also when using <code>address()</code>, it will return the full address. In fact, I want just the letter. For example: just return "H", not "H23", I have to add another function like <strong><code>regexextract(string,"\D+")</code></strong></p>
  
  <p>I'm just curious if there is built-in function get the column letter directly without any additional function.</p>