real_sql :: SELECT o.bk_type, o.bk_file1_orig, o.bk_file1_save, o.bk_file2_orig, o.bk_file2_save, o.bk_ex, o.bk_tag, p.bk_id, p.bk_board, p.bk_target, p.bk_open_id, p.bk_name, p.bk_area, p.bk_start_date, p.bk_end_date, p.bk_week, p.bk_start_time, p.bk_end_time, p.bk_attendance, p.bk_max_people, p.bk_price FROM booking_open AS o, booking_program1 AS p WHERE o.bk_id = p.bk_open_id AND o.bk_type = '2' AND o.bk_type = p.bk_type AND p.bk_use <> 1 AND p.bk_target LIKE '%중·고등학생%' ORDER BY p.bk_id DESC LIMIT 0,4