php คำสั่ง mysql select ข้อมูลแบบ DESC โดย Query 2 ครั้งให้ข้อมูลไม่ซ้ำกันทำได้ไหม แล้วใช้คำสั่งอะไรครับ

<?
	$strr = "SELECT * FROM news_db ORDER BY id DESC LIMIT 1";
	$setquery = mysql_query($strr);
	while($setresult = mysql_fetch_array($setquery))
	{
        $id = $setresult['id'];
	?>
       <img src="<?=$setresult["image"];?>" width="300" height="250"><br><?=$setresult["subject"];?>
	<? } ?>
       
    <?
	
	$strSQL = "SELECT * FROM news_db WHERE id != $id ORDER BY id DESC LIMIT 4";
	$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");		
	echo "<table><tr>";
	$intRows = 0;
	while($objResult = mysql_fetch_array($objQuery))
	{
		echo "<td valign=\"top\">"; 
		$intRows++;
?>
   		
						<table width="150" height="150" border="0">
   							<tr>
       		    <td valign="top"><img src="<?=$setresult["image"];?>" width="150" height="100"><br><?=$setresult["subject"];?>
                           </td>
      					 		</tr>
                               <tr>
                           <td valign="top" class="dateindex"><?=$objResult["date"];?>
                           </td>
                           	</tr>
  							</table>
<?
		echo"</td>";
		if(($intRows)%4==0)
		{
			echo"</tr>";
		}
	}
	echo"</table>";
?>

<?
	$strr = "SELECT * FROM news_db ORDER BY id DESC LIMIT 1";
	$setquery = mysql_query($strr);
	while($setresult = mysql_fetch_array($setquery))
	{
		$standid=$setresult["id"]; // เก็บค่า id ที่ทำการแสดงผล
	?>
       <img src="<?=$setresult["image"];?>" width="300" height="250"><br><?=$setresult["subject"];?>
	<? } ?>
       
    <?
	
	$strSQL = "SELECT * FROM news_db WHERE id != $standid  ORDER BY id DESC LIMIT 4"; // select ข้อมูลที่ไม่ใช่ $standid แค่ 4
	$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");		
	echo "<table><tr>";
	$intRows = 0;
	while($objResult = mysql_fetch_array($objQuery))
	{
		echo "<td valign=\"top\">"; 
		$intRows++;
?>
   		
						<table width="150" height="150" border="0">
   							<tr>
       		    <td valign="top"><img src="<?=$setresult["image"];?>" width="150" height="100"><br><?=$setresult["subject"];?>
                           </td>
      					 		</tr>
                               <tr>
                           <td valign="top" class="dateindex"><?=$objResult["date"];?>
                           </td>
                           	</tr>
  							</table>
<?
		echo"</td>";
		if(($intRows)%4==0)
		{
			echo"</tr>";
		}
	}
	echo"</table>";
?>