title: Changing a Column type in my Android App's Database
body: <p>I have an app published in the play store.</p>
  
  <p>The app uses a database which holds a table which has a column of type int.</p>
  
  <p>I'm doing a new change where I need to change the column type to long.</p>
  
  <p>How do I go about handling it in the DatabaseHandler I'v created.</p>
  
  <p>I want to preserve the data stored in the older apps database, so what should ideally be the code in the onUpgrade() function???</p>