SHOW FULL COLUMNS FROM `task` [ RunTime:0.001124s ]
SELECT * FROM `task` WHERE `section_son_id` < 53 AND `section_son_id` <> 35 AND `code` >= 1 AND `code` <= 4 ORDER BY `create_time` DESC LIMIT 0,15 [ RunTime:0.009673s ]
SHOW FULL COLUMNS FROM `task_column_grandson` [ RunTime:0.000867s ]
SELECT * FROM `task_column_grandson` [ RunTime:0.000655s ]
SELECT * FROM `task` WHERE `section_son_id` < 53 AND `section_son_id` <> 35 AND `code` >= 1 AND `code` <= 4 [ RunTime:0.051764s ]
SELECT * FROM `task` WHERE `section_son_id` < 53 AND `section_son_id` <> 35 AND `code` < 4 [ RunTime:0.015347s ]