title: SQLite execute query and get result
body: <p>I have that query </p>
  
  <pre><code>    String queryMonthSize = "SELECT (julianday(Date('now')) -
      julianday(date('now','-1 month')) FROM "+ TABLE_STATISTICS;
  </code></pre>
  
  <p>Which on sqlite it will return me the difference of the two dates.</p>
  
  <p>How can i execute it on the android code so that i will return me the numerical value of the string?</p>