title: Drools decision table - one column - two fields
body: <p>Let's suppose we have some class which is related to one or more codes: main and secondary. Every object of this class has at least main code and can have unlimited number of secondary codes:</p>
  
  <pre><code>class Something {
  
    private String mainCode;
    private List&lt;String&gt; secondaryCodes;
  }
  </code></pre>
  
  <p>I want to make a rule in Drools decision table which allows me to check if value given in column is equal to mainCode or is contained by secondaryCodes. 
  So I need one column for two rules related to two different fields.</p>
  
  <p>Is it even possible?</p>