ปัญหาคำสั่ง SQL ของ MySQL เกี่ยวกับการjoinตารางและเช็คเวลา

SELECT DISTINCT * FROM data_member left join table_checkin ON data_member.ID_Member = table_checkin.ID_Member WHERE data_member.ID LIKE '%5%' AND table_checkin.ID_Member is null

$date = '2018-08-15';

$sql = "SELECT DISTINCT * FROM data_member left join table_checkin ON data_member.ID_Member = table_checkin.ID_Member ";  
$sql_day = "SELECT 'ID_Member' FROM `table_checkin` WHERE `Day` = '$date'";
$filter_day = $conn->query($sql_day);
 if(isset($_GET['TEST']) && $_GET['TEST']!=""&& $_GET['text_search']=="") {
    $sql .= " WHERE data_member.{$_GET['TEST']} AND NOT EXISTS (SELECT table_checkin.ID_Member FROM table_checkin WHERE Day = $date  AND table_checkin.ID_Member is null)";
}   
  else  {

    

  }

if(isset($_GET['text_search']) && $_GET['text_search']!=""){
  
    $sql .= " WHERE data_member.{$_GET['TEST']} LIKE '%{$_GET['text_search']}%' AND  EXISTS (SELECT 'ID_Member' FROM `table_checkin` WHERE `Day` = '$date' AND table_checkin.ID_Member is null)  ";  
} 
else{

}

$result = $conn->query($sql);



@$total=mysqli_num_rows($result);

 $e_page=10; // กำหนด จำนวนรายการที่แสดงในแต่ละหน้า   
 $step_num=0;

if(!isset($_GET['page']) || (isset($_GET['page']) && $_GET['page']==1)){   
    $_GET['page']=1;   
    $step_num=0;
    $s_page = 0;    
}else{   
    $s_page = $_GET['page']-1;
    $step_num=$_GET['page']-1;  
    $s_page = $s_page*$e_page;
}   
$sql.=" ORDER BY ID ASC LIMIT ".$s_page.",$e_page  ";
$result=$conn->query($sql);
  echo $sql;
?>


              <div class="col-md-12">
                <div class="table-responsive">
    <table class="table table-bordered">
        <thead>
            <tr>
                <th>ID</th>
                <th width="150">Name</th>
                <th>ID_Member</th>
                <th width="130">Tel</th>
                <th>Guide</th>
                <th>Driver</th>
                <th>Company</th>
                <th>Country</th>
                <th width="120">Note</th>
                <th>CheckIn</th>
            </tr>
        </thead>
        <tbody>
            <tr>

                 <?php 
                if($result && $result->num_rows>0){  // คิวรี่ข้อมูลสำเร็จหรือไม่ และมีรายการข้อมูลหรือไม่
   while($row = $result->fetch_assoc()) {?>
    <tr>
    <td ><?php echo $row['ID']; ?></td>
    <td><?php echo $row['Name']; ?></td>
    <td><?php echo $row['ID_Member']; ?></td>
    <td><?php echo $row['Tel']; ?></td>
    <td><?php echo $row['Guide']; ?></td>
    <td><?php echo $row['Driver']; ?></td>
    <td><?php echo $row['Company']; ?></td>
    <td><?php echo $row['Country']; ?></td>
    <td><?php echo $row['Note']; ?></td>
   <td><a class='btn btn-sm btn-warning' href="JavaScript:if(confirm('Confirm CheckIn?') == true){window.location='insert_checkin.php? ID_Member=<?php echo $row['ID_Member']; ?>';}">CheckIn</a> </td>
            <?php  } }

            ?>
            </tr>

            
</tbody>
    </table>
</div>
</div>
          <?php 

   page_navi($total,(isset($_GET['page']))?$_GET['page']:1,$e_page,$_GET); ?>