title: DROP trigger only if it exists (ORACLE)
body: <p>I want to <strong>drop</strong> a existing trigger in <strong>ORACLE</strong>.</p>
  
  <p>I do know the <code>drop</code> query for the trigger in <strong>oracle</strong>. But wanted to know that how can I check if that trigger is already exists in <strong>Oracle DB</strong>.</p>
  
  <p>DROP query:</p>
  
  <pre><code>DROP TRIGGER **TRIGGER_NAME**
  </code></pre>