SELECT DISTINCT
        B.bid AS _bookId,
        B.bname AS _bookName,
        W.wid AS _writerId,
        W.wname AS _writerName,
        C.cid AS _commentId,
        C.comment AS COMMENTS,
        C.DATE AS _commentDate,
        U.uname AS _userName,
        U.uid AS _userID
        FROM books_writers AS BW
        JOIN books AS B ON B.bid = BW.bid
        JOIN books_writers AS BW1 ON B.bid = BW1.bid
        JOIN writers AS W ON BW1.wid = W.wid
        LEFT JOIN comments AS C ON C.bid = BW1.bid
        LEFT JOIN users AS U ON U.uid = C.uid
        WHERE B.bid=?
        ORDER BY _commentDate DESC