SHOW FULL COLUMNS FROM `tb_courseshow_mentor` [ RunTime:0.004616s ]
SELECT `id`,`name_mentor`,`univ_mentor`,`pic_mentor`,`research_mentor`,`background_mentor`,`tags_mentor` FROM `tb_courseshow_mentor` WHERE `status_mentor` = 1 AND `id` = 17 LIMIT 1 [ RunTime:0.008065s ]
SHOW FULL COLUMNS FROM `tb_courseshow` [ RunTime:0.005434s ]
SELECT `id`,`bgpic`,`title`,`ask_count`,`toprec`,`isfull` FROM `tb_courseshow` WHERE `mentor_id` = 17 AND `status` = 2 ORDER BY `toprec` DESC,`create_time` DESC,`id` DESC LIMIT 4 [ RunTime:0.007893s ]
SELECT `c`.`id` FROM `tb_courseshow_mentor` `m` LEFT JOIN `tb_courseshow` `c` ON `c`.`mentor_id`=m.id and c.status=2 WHERE `m`.`id` = '17' AND `delete_time` IS NULL [ RunTime:0.012518s ]
SELECT `id`,`name_mentor`,`univ_mentor`,`pic_mentor`,`research_mentor` FROM `tb_courseshow_mentor` WHERE `status_mentor` = 1 AND `id` <> 17 [ RunTime:0.011031s ]