title: difference between usage of having clause and where clause
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/287474/sql-whats-the-difference-between-having-and-where">SQL: What&#39;s the difference between HAVING and WHERE?</a>  </p>
  </blockquote>
  
  
  
  <p>What is the difference between using <code>having</code> clause and <code>where</code> clause. Could any one explain in detail.</p>