3D教程从简单到复杂的进行了入门和提高的讲解，适合于初学者，同时可以step by step地进行学习，比较实用。-3D tutorial from simple to complex and the raising of entry talks, suitable for beginners, but can also step by step to learning more practical.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001433s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.099041s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001252s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002262s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001297s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004120s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001115s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003998s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016404s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001432s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 322386 [ RunTime:0.001347s ]
