mysql 버전업그레이드를 했는데

쿼리중에 like ? 라는 부분때문에 계속 에러가 납니다.

밑에서 세번째줄에 보시면 like ? 라는 구문이 있는데요 .. 이 구문이 무슨 뜻인가요?

        select
                sql_calc_found_rows
                m.pid,
                m.id,
                m.name,
                l.lang,
                count(ls.lecturer_pid) as total_cnt,
                sum(ls.ls_minute) as total_time,
        from
                member m,
                leisure l
                left outer join leisure_s ls
                        on m.pid = ls.lecturer_pid and ls.book_type <> 'S'
        where
                m.pid = l.m_pid
                and if('$s_lang' <> '', l.lang = '$s_lang', 1)
                and
                        case
                                when length(trim('$find')) = 0 then 1
                                else
                                        case '$find'
                                                when 'm.name'      then m.name
                                                when 'm.id'        then m.id
                                        end
                                        like ?
                        end
        group by m.pid;