jQuery Server Side DataTables - 仅在第一页上显示的数据

Question

您好我正在jQuery DataTables Server Side网站上使用PHP。我能够显示所有数据，搜索/过滤数据。但它只在第一页上工作。当我尝试转到Second Page及以上时，No matching records found显示且没有数据。请检查我的下面的代码，不确定问题是否在我的查询中。感谢

test.php的

$fetch_data = $dtQuery->make_datatables();  
    $data = array();  
       foreach($fetch_data as $row)  
       {  
            $sub_array = array();
             $sub_array[] = $row['ApplNo'];
             $sub_array[] = $row['BLNo'];
            $data[] = $sub_array;  
       }
       $output = array(  
            "draw"                    =>     intval($_POST["draw"]),  
           "recordsTotal"          =>      $dtQuery->get_all_data(),  
            "recordsFiltered"     =>        $dtQuery->get_filtered_data(),
            "data"                    =>     $data  
       );  
       echo json_encode($output);

ViewPage.php

<table id="myTable">
        <thead>
        <tr>
            <th>First name</th>
            <th>Last name</th>
        </tr>
    </thead>
    </table>

QueryTable.php

public function make_datatables(){  


      $offset = $_POST['start'];
      $limit = $_POST['length'];
      $filter = $_POST["search"]["value"];
      $extractdata = "SELECT  *
                  FROM    ( SELECT    ROW_NUMBER() OVER ( ORDER BY CreationDate DESC) AS RowNum, *
                        FROM      MANIFESTBOL WHERE (ApplNo LIKE '%$filter%' OR BLNo LIKE '%$filter%')
                      ) AS RowConstrainedResult
                  WHERE   RowNum >= '$offset'
                    AND RowNum < '$limit'";

             return $STH = $this->connection->query($extractdata);
      }  
    public function get_filtered_data(){  
           $filter = $_POST["search"]["value"];
           $extractdata = "SELECT  COUNT(*)
                  FROM    ( SELECT ROW_NUMBER() OVER ( ORDER BY CreationDate DESC) AS RowNum, *
                        FROM MANIFESTBOL WHERE (ApplNo LIKE '%$filter%' OR BLNo LIKE '%$filter%')
                      ) AS RowConstrainedResult";

             return $STH = $this->connection->num_rows($extractdata);
    }

    public function get_all_data()  
      {  
            $count = "SELECT COUNT(ApplNo) as count FROM MANIFESTBOL";
            $result = $this->connection->count_all_results($count);
            return $result["count"];

      }

的script.js

var dataTable = $('#myTable').DataTable({
        "iDisplayLength": 10,
        "aLengthMenu": [[10, 25, 50, 100, 500, 1000, -1], [10, 25, 50, 100, 500, 1000, "All"]],
       "processing":true,  
       "serverSide":true,  
       "order":[],  
       "ajax":{  
            url:'webfiles/Test.php',
            type:"POST"
       },  
       "columnDefs":[  
            {  
                 "targets":[0],  
                 "orderable":false,  
            },  
       ]
  });