完成顺序表的各种基本运算，查找，删除，插入，求顺序表长度-The completion of the order of the table a variety of basic operations, find, delete, insert, seeking the length of the order of the table
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001360s ]
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:0.106607s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001952s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003178s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001403s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003677s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001133s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003241s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014789s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001606s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 180389 [ RunTime:0.001338s ]
