ทำสินค้าขายดีแต่ข้อมูลไม่ขึ้น ติด Error "Query was empty" รบกวนดูโค้ดให้หน่อยคะไม่ทราบว่าผิดตรงไหน

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<table width="800" border="0" align="left" cellpadding="0" cellspacing="2">  
<?php 
include "connect.php"; 

$i=1;  
$q="
SELECT products.pro_id,products.pro_name,SUM(orders_detail.order_num) AS sum_qty
FROM orders
INNER JOIN orders_detail ON orders.order_id=orders_detail.order_id
INNER JOIN products ON products.pro_id=orders_detail.pro_id
WHERE YEAR(orders.order_date)='2015'
GROUP BY products.pro_id
ORDER BY sum_qty DESC;
"; 
    
$qr=mysql_query($q);     
$numItem=mysql_num_rows($qr);  
$numCol=4;  
$remainCol=$numCol-($numItem%$numCol);  
while($rs=mysql_fetch_array($qr)){    
?>  
<?php if($i%$numCol==1){ ?>  
 
  <tr>  
  	<td width="160" align="center" valign="baseline"><p>
    	<img src="images/<?=$rs[pro_image]?>" width="80">
  	    <img src="imgicon/01.gif" width="21" height="9"></p>
  	  <p>
  	    <?=$rs[pro_type]?>
      </p>
  	  <p>  	    <a href="#">ราคา</a> :
  	    <?=$rs[pro_price]?>
    <a href="#">บาท</a></p>
  	  <p>
  	    <?=$rs[pro_times]?>
    </p>
    <p><a href="basket_add.php?id=<?=$rs[pro_id]?>"><img src="imgicon/shoping_icon.jpg" width="100" height="25" /></a><br></p></td> 
<?php } ?>  
<?php if($i%$numCol==2){ ?>      
    <td width="160" align="center" valign="baseline"><p><img src="images/<?=$rs[pro_image]?>" width="80"> <img src="imgicon/01.gif" width="21" height="9"></p>
      <p>
        <?=$rs[pro_type]?>
      </p>
    <p> <a href="#">ราคา</a> :
      <?=$rs[pro_price]?>
      <a href="#">บาท</a></p>
    <p><?=$rs[pro_times]?>
    </p>
    <p><a href="basket_add.php?id=<?=$rs[pro_id]?>"><img src="imgicon/shoping_icon.jpg" width="100" height="25" /></a></p></td>  
<?php } ?>  
<?php if($i%$numCol==0){ ?>          
    <td width="160" align="center" valign="baseline"><p><img src="images/<?=$rs[pro_image]?>" width="80"> <img src="imgicon/01.gif" width="21" height="9"></p>
      <p>
        <?=$rs[pro_type]?>
      </p>
    <p> <a href="#">ราคา</a> :
      <?=$rs[pro_price]?>
      <a href="#">บาท</a></p>
    <p>
      <?=$rs[pro_times]?>
    </p>
    <p><a href="basket_add.php?id=<?=$rs[pro_id]?>"><img src="imgicon/shoping_icon.jpg" width="100" height="25" /></a></p></td>  
  </tr>
<?php } ?>  
<?php $i++; } ?>  
<?=($remainCol>0 && $remainCol!=$numCol)?"<td colspan=".$remainCol."></td></tr>":""?>    
<?php 
echo $sql3."<br>";
mysql_query($sql3) or die(mysql_error());

?>
</table>