title: Google visualization data grouping on String column
body: <p><a href="http://i.stack.imgur.com/j84OA.jpg" rel="nofollow">DB Table Structure </a></p>
  
  <pre><code>data_MONTHMONTHTEST = new google.visualization.DataTable();
  
  data_MONTHMONTHTEST.addColumn('number','id');//0
  data_MONTHMONTHTEST.addColumn('string','month');//1
  data_MONTHMONTHTEST.addColumn('number','revenue');//2
  
  var aggView_MONTHMONTHTEST_month =google.visualization.data.group(data_MONTHMONTHTEST, [1],[{'column':2, 'aggregation':google.visualization.data.sum, 'type': 'number',label:'revenue'}]);
  
  
  barChart_MONTHMONTHTEST_month = new google.visualization.ChartWrapper(
  {
      'chartType':'BarChart',
      'containerId': 'chart_div_bar_MONTHMONTHTEST0',
      'options': barOptions_MONTHMONTHTEST_month ,
       dataTable:  aggView_MONTHMONTHTEST_month 
  });             
  </code></pre>
  
  <p>When Am drawing the chart month column values are not getting preserved. Rather it is drwing the chart based on alphabet order.</p>
  
  <p>I've tried sort:disabled as part of options list,but no luck.</p>
  
  <p>Can someone suggest how to preserve months order.</p>
  
  <p>Thanks in Advance..!!</p>