i dont get result form one of my 2 selected databases

[etsted]

I have a script here that is supposed to select information from 2 databases, but it only select from one, conversation_message.

$status_replies = "";                // select all the replies connected to their specific thread        $sql = "SELECT conversation_message.id, conversation_message.subject, conversation_message.message, conversation_message.date_sent, conversation.sender        FROM conversation_message        LEFT JOIN conversation        ON conversation_message.id = conversation.id        ORDER BY conversation_message.date_sent ASC";        $query_replies = mysqli_query($con, $sql);        $replynumrows = mysqli_num_rows($query_replies);        if($replynumrows > 0){                        while ($row2 = mysqli_fetch_array($query_replies, MYSQLI_ASSOC)) {                                $statusreplyid = $row2["id"];                $statusReplySubject = $row2["subject"];                $replydata = $row2["message"];                $statusReplySender = $row2["sender"];                $replydata = nl2br($replydata);                $replydata = str_replace("&","&",$replydata);                $replydata = stripslashes($replydata);                $replyDate = $row2["date_sent"];                                // holds all of the replies                $status_replies .= '<div id="reply_'.$statusreplyid.'" class="reply_boxes"><div><b>Reply by <a href="user.php?u='.$statusReplySender.'">'.$statusReplySender.'</a> '.$replyDate.':</b><br />'.$replydata.'</div></div>';                        }                        }

$statusReplySender which comes from the conversation table dont return anything, and yes it does have a value inside the DB.

[justsomeguy]

Those are tables, not databases. A left join means that all rows in the left table (conversation_message) will be returned, along with any matching rows from the right table (conversation). If it's not returning any matching rows then no rows from conversation matched the conditions in the ON clause.