Mostrar cada valor de campo DISTINCT solo una vez usando el bucle

SELECT listTitle, listLength, listCmt, listDt, mBCFName, mBCLName, moAmt, moDtOff
FROM User U, Listing L, Merchant M, MerchantOffer MO
WHERE U.uID = L.uID
and L.listID = MO.listID
and M.mID = MO.mId
ORDER BY listDt DESC;

Este bucle foreach ()

    $result = $sth->fetchAll(PDO::FETCH_ASSOC);
    foreach($result as $row) 
    { 
    echo "<div class='listing'>";
        print '<br>Title: ' . $row['listTitle'] . '<br>Comment: ' . $row['listCmt'] . 
        '<br>Date: ' . $row['listDt'] . '<br>Offer By: ' . $row['mBCFName']. ' ' .$row['mBCLName']. '<br> for: ' . $row['moAmt'];
    echo "</div>";
    }   

productos:

ásicamente lo que quiero es:

Title: Apple iPhone 4S (listTitle)
Days: <some day amount <listLength>
Comment: some comment <listCmt>

    Offer By: some user <mBCFName mBCLName>
    Offer:  19.99 <moAmt>
    Date: 10/03/2011 < moDtOff>

    Offer By: some user <mBCFName mBCLName>
    Offer:  19.99 <moAmt>
    Date: 10/03/2011 < moDtOff>

    Offer By: some user <mBCFName mBCLName>
    Offer:  19.99 <moAmt>
    Date: 10/03/2011 < moDtOff>

    Offer By: some user <mBCFName mBCLName>
    Offer:  19.99 <moAmt>
    Date: 10/03/2011 < moDtOff>

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