Querying two tables with while loop

Hello All,
Is it possible to evaluate one query within a while loop of another query.
Below is my code which shows all the data from the database to html.
now inside the while loop, i want some more info from another table. i tries it with code(the highlited one), but when i use it only one result is shown on html.

<?php
$displayList = ""; 
$sql = "SELECT * FROM forum_sections ORDER BY ordered ASC LIMIT 20";
$query=mysqli_query($db_conx,$sql);
$blogcount = mysqli_num_rows($query);
if($blogcount<1){
$result="You havenot posted any Blog yet,Post one now.";
	}
else{?>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Buddies Column-One Place</title>
<link rel="stylesheet" type="text/css" href="css/mystyling.css">
<link rel="icon" href="css/pictures/logo.png" type="image/x-icon">
    <style type="text/css">
#blogdata {
    width:75%;
    border:2px solid silver;
    background-image:url('css/images/yell.jpg');
    background-size:cover;
    font-weight:bolder;
    text-align:center;
    overflow:hidden;
    padding:3px;
    margin:auto; 
}
    </style>
</head>
<body>
<div id="bloggy" style=" min-height:550px;  background-size:cover;" >
<div id="blogdata">     
  <?php
     while($row = mysqli_fetch_array($query, MYSQLI_ASSOC)){	
	$sectionID = $row["id"];
	$sectionTitle = $row["title"];
     $displayList= '<a href="newsection.php?id=' . $sectionID . '"><img src='.$thumb.' width="100%" height="150" alt="Section" /></a>';
	 $sectionTitle='<a href="newsection.php?id=' . $sectionID . '">'.$sectionTitle.'</a>';	
 [COLOR="#00FF00"]$sql = "SELECT DISTINCT otid FROM forum_posts WHERE section_title='$sectionTitle'";
     $query=mysqli_query($db_conx,$sql);[/COLOR]

?>
<div class="img-wrap"><p class="title"><?php echo $sectionTitle;?></p><div class="imge"><?php echo $displayList;?></div></div>
<?php
}
}
?><br/><br/>
</div><!---blogdata--->
</div><!---end of bloggy-->
</body>
</html>

Isn’t it possible to do this using an inner join in your original query and merge the data in? Can you give more information on exactly what you’re trying to get from the second table, and how it relates to the first?