jqGrid二级表格如何连接数据库数据显示

利用jqGrid二级表格以及分页,需要实现access数据库的数据分组显示。但是不知道数据库查询出来的数据改怎样转换格式后传入jqGrid中显示?完整代码如下,代码中注释的地方不知道怎样补充和修改?(本地access数据库,html在IE下打开)

完整代码:

<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>Report</title>
 <link type="text/css" rel="stylesheet" href="css/ui.jqgrid.css">
<link type="text/css" rel="stylesheet" href="css/jquery-ui-1.9.2.custom.css">
<link type="text/css" rel="stylesheet" href="css/myjqGrid.css">
<link type="text/css" rel="stylesheet" href="css/mypage.css">
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/grid.locale-cn.js"></script>
<script type="text/javascript" src="js/jquery.jqGrid.min.js"></script>
<script type="text/javascript" src="js/laydate.js"></script>
<script type="text/javascript" src="js/conn_db.js"></script>
        
<script type="text/javascript">


function querydb(){
 
 var selectString="select * from ReportBatchList where DateTime>=#"+DateS+" 00:00:00# and DateTime<=#"+DateE+" 23:59:59# ORDER BY DateTime DESC";
 var rs=new ActiveXObject("ADODB.Recordset");
 rs=conn.execute(selectString);
.
.     //此处需要在查询数据库数据后,再进行转换格式后传入jqGrid二级表格显示
.
.
applyFilter();
 }

    
    
$(function(){
  applyFilter();
});
            
function applyFilter()
{  
   $("#Datalist").jqGrid('GridUnload');
    
    $("#Datalist").jqGrid({  
        data: mydata,        //此处来自数据库主数据
        datatype: "local",      
        colModel: [      
              {name:"DateTime",index:"DateTime",label:"Date",width:80},    
              {name:"Description",index:"Description",label:"Description",width:160,sortable:false},  
        ], 
       height:500,
       width:800,  
       hoverrows:false,
       loadonce:true,
       viewrecords: true,  
       rowNum: 1000,    
          
        hidegrid: false,  
        shrikToFit: false,  
        subGrid: true,
    beforeSelectRow: function(rowid, e) {
    return false;
          },  
        subGridRowExpanded: function(subgrid_id, row_id) {   
            var subgrid_table_id;  
            subgrid_table_id = subgrid_id + "_t";     
                
            $("#" + subgrid_id).html("<table id='"+subgrid_table_id+"' class='scroll'></table>");  
              
            $("#" + subgrid_table_id).jqGrid({  
    data: mydata,             //此处来自数据库详细数据
                datatype: "local",  
                colNames: ['Code','BTName','PRName','QTY'],  
                colModel: [  
                    {name:"FabCode",index:"FabCode",width:80,key:true},  
                    {name:"BatchName",index:"BatchName",width:130},  
                    {name:"ProName",index:"ProName",width:80,align:"right"},  
                    {name:"MainQty",index:"MainQty",width:80,align:"right"}  
                ],  
                rowNum:50,
    hoverrows:false,
    loadonce:false,
    height:250
           });  
        }  
    });       
   } 

</script>
</head>
<body>
<table>
  <tr>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <td valign="top">
    <table>
  <tr>
    <td><span>FROM&nbsp;:&nbsp;</span></td>
    <td><input name="StartDate" id="Qds" style=" text-align:center" type="text" value="" size="12"></td>
  </tr>
  <tr>
    <td><span>TO&nbsp;:&nbsp;</span></td>
    <td><input name="EndDate" id="Qde" style=" text-align:center" type="text" value="" size="12"></td>
  </tr>
  <tr>
    <td>&nbsp;</td>
    <td><button onClick="querydb()">Search</button></td>
  </tr>
  <tr>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
  </tr>
</table>

    </td>
    <td>
    <table id="Datalist"></table>
    </td>
  </tr>
</table>
<script type="text/javascript">
lay('#version').html('-v'+ laydate.v);
laydate.render({
  elem: '#Qds',
  value: currentDate,
  showBottom: false,
  done: function(){
         DateS = document.getElementById('Qds').value;
       }
});
laydate.render({
  elem: '#Qde',
  value: currentDate,
  showBottom: false,
  done: function(){
        DateE = document.getElementById('Qde').value;
       }
});
var DateS = document.getElementById('Qds').value;
var DateE = document.getElementById('Qde').value;
querydb();
</script>
</body>
</html>