title: how to find out number of days in month in mysql
body: <p>I have several dates in mysql tables, using those dates I need to find out the number of days in the month. Suppose i have 2003-02-05 it should return 28. for example</p>
  
  <pre><code>date                days_in_month
  2003-2-3            28
  </code></pre>