title: Query to find the records from a table which are updated or added in the last one month?
body: <p>I want to select the records from a table which are updated or added in the last one month (table doesn’t have any datetime field and I can’t change the table structure). 
  Is it possible to write a sql query for that? how to fetch those records from table.</p>
  
  <p>regards,
  kumar</p>