sqlite3数据库，体积轻便，比其他常用数据库速度快，而且数据库文件可用于不同平台下，编程简单。Sqlite database, the volume is light, faster than other commonly used database, and the database file can be used for different platforms, programming is simple.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001299s ]
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:0.106595s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000881s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001798s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002058s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004731s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001495s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003931s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015375s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001089s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 300358 [ RunTime:0.015492s ]
