title: Column name as variable in PL/SQL ORACLE
body: <p>I want to have a code where i would declare a column name as variable and then use this variable to retrieve desired column from a certain table.</p>
  
  <pre><code>DECLARE
  col_n VARCHAR (100) := 'X' ;
  BEGIN
  select col_n from my_table;
  END;
  </code></pre>
  
  <p>What is the most easy and explicit way for that in Oracle?</p>