我需要帮助，任何人都可以帮助我删除此警告消息，这里是代码。
<?php
$fname="fname";
$exam_name="exam_name";
$date="date";
$class="class";
$query="query";
$query2="query2";
$database=("mcl");
mysql_connect("localhost","root","mcl");
@mysql_select_db(mcl) or die( "Unable to select database");
if(isset($_REQUEST['submit'])){
$fname=$_POST['fname'];
$date=$_POST['date'];
$exam_name=$_POST['exam_name'];
$class=$_POST['class'];
$sql=" SELECT * FROM stdreg_exam WHERE fname like '%".$fname."%' AND
exam_name like '%".$exam_name."%'AND class like '%".$class."%' AND date
like '%".$date."%'" or die(mysql_error());
$sql2
="SELECT(mathematics+english+kiswahili+geograph+civics+french+religion+
pds+vskill+ict+science+history)/12 FROM stdreg_exam( as Average, (SELECT
(mathematics+english+kiswahili+geograph+civics+french+religion+
pds+vskill+ict+science+history) FROM stdreg_exam( as Total WHERE fname like
'%".$fname."%' AND exam_name like '%".$exam_name."%'AND class like
'%".$class."%' AND date like '%".$date."%'" or die(mysql_error());
$q=mysql_query($sql);
$q=mysql_query($sql2);
}
else{
$sql="SELECT * FROM stdreg_exam";
$q=mysql_query($sql);
}
?>
<form method="post">
<table width="500" border="0">
<tr>
<td>Student name</td>
<td><input type="text" name="fname" value="<?php echo $fname;?>" /></td>
<td>Exam name</td>
<td><input type="text" name="exam_name" value="<?php echo $exam_name;?>"
/></td>
<td>Class</td>
<td><input type="text" width="10" name="class" value="<?php echo
$class;?>" /></td>
<td>Date</td>
<td><input type="date" name="date" value="<?php echo $date;?>" /></td>
<td><input type="submit" name="submit" value="Search" /></td>
</tr>
</table>
<br />
</form>
<table>
<h4><?php echo $exam_name;?> examinaton result of <?php echo
$fname;?>
held on <?php echo $date;?></h4><hr>
<table width="1110" border="0" cellpadding="2" cellspacing="1" >
<tr>
<td bgcolor="#CCCCCC" width="2000">Student name</td>
<td bgcolor="#CCCCCC" width="10">Mathematics</td>
<td bgcolor="#CCCCCC" width="10">English</td>
<td bgcolor="#CCCCCC" width="10">Kiswahili</td>
<td bgcolor="#CCCCCC" width="10">Geograph</td>
<td bgcolor="#CCCCCC" width="10">Civics</td>
<td bgcolor="#CCCCCC" width="10">French</td>
<td bgcolor="#CCCCCC" width="10">Religion</td>
<td bgcolor="#CCCCCC" width="10">Pds</td>
<td bgcolor="#CCCCCC" width="10">Vskill</td>
<td bgcolor="#CCCCCC" width="10">Ict</td>
<td bgcolor="#CCCCCC" width="10">Science</td>
<td bgcolor="#CCCCCC" width="10">History</td>
<td bgcolor="#CCCCCC" width="10">Average</td>
<td bgcolor="#CCCCCC" width="10">Total</td>
<td bgcolor="#CCCCCC" width="10">Exam_name</td>
<td bgcolor="#CCCCCC" width="1000">Class</td>
<td bgcolor="#CCCCCC" width="1000">Date</td>
</tr>
<?php
while($res=mysql_fetch_array($q)){
?>
<tr>
<td width="100"><?php echo $res['fname'];?></td>
<td width="10"><?php echo $res['mathematics'];?>%</td>
<td width="10"><?php echo $res['english'];?>%</td>
<td width="10"><?php echo $res['kiswahili'];?>%</td>
<td width="10"><?php echo $res['geograph'];?>%</td>
<td width="10"><?php echo $res['civics'];?>%</td>
<td width="10"><?php echo $res['french'];?>%</td>
<td width="10"><?php echo $res['religion'];?>%</td>
<td width="10"><?php echo $res['pds'];?>%</td>
<td width="10"><?php echo $res['vskill'];?>%</td>
<td width="20"><?php echo $res['ict'];?>%</td>
<td width="10"><?php echo $res['science'];?>%</td>
<td width="10"><?php echo $res['history'];?>%</td>
<td width="30"><?php echo $res2['Average']; ?></td>
<td width="30"><?php echo $res2['Total']; ?></td>
<td width="10"><?php echo $res['exam_name'];?></td>
<td width="30"><?php echo $res['class'];?></td>
<td width="280" style="border-width:medium"><?php echo $res['date'];?></td>
</tr>
<?php }?>
当我运行查询时，它给了我这条消息（警告：mysql_fetch_array() 期望参数 1 是资源，在第 322 行的 C:\wamp\www\db_valentine_V2\std_report_exam.php 中给出的布尔值），请帮忙。