title: getting last day from next month
body: <p>I need to get last day from next month in this select.</p>
  
  <pre><code>select (last_day(month from :date+1)||'.'||
         (extract(month from :date)+1)||'.'||
         extract(year from :date))
    from dual;
  </code></pre>
  
  <p>Everything is ok with month and year but I have a problem with last day function.</p>