title: Altering and adding column to the table in sqlite3
body: <p>If I alter the table and add a new column will add the data be wiped off from that table. </p>
  
  <pre><code>ALTER TABLE MyTable ADD COLUMN noOfDays integer default 0 NOT NULL 
  </code></pre>
  
  <p>Will the above SQL command drop MyTable and then ALTER it with the noOfDays column or will it simply add the noOfDays column without dropping it. </p>