title: oracle conditional where clause with filter
body: <p>I have to use a conditional where clause like below one, what is the working version of this clause?</p>
  
  <pre><code>AND CASE WHEN b.kurum_turu = 1 
           THEN u.kod  in ('1125', '2975', '1127', '4460', '1128', '1126')  
      ELSE u.kod  in ('1125', '2975')                 
  END
  </code></pre>