title: Getting apex_util.json_from_sql to return 0.5
body: <p>I'm working with Application Express and Jquery. If my field contains the value of 0.5 Oracle returns it as .5 without the zero. This causes jQuery JSON parser to choke.</p>
  
  <pre><code>declare v_sql varchar2(4000);
  
  begin
      v_sql := 'select 0.5 xyz from dual';
      apex_util.json_from_sql (v_sql);
  end;
  </code></pre>
  
  <p>Returns:</p>
  
  <pre><code>{"row":[{"XYZ":.5}]}
  </code></pre>
  
  <p>I want:</p>
  
  <pre><code>{"row":[{"XYZ":0.5}]}
  </code></pre>
  
  <p>Is there some way to direct json_from_sql to put in the leading zero if required for all decimal fields?</p>