这是一个关于SDT的学习资料，其中有我的一点心得，，非常重要，，如果以前的资料也有这种心得我就不用花很多时间了-This a study of SDT, which is the point I experience, it is very important that, if the information before this experience I would not have to spend a lot of time! !
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002092s ]
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:0.084056s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002343s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002049s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002180s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003787s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002025s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003397s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015133s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002398s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 289037 [ RunTime:0.001145s ]
