最新的学生选课源代码，用购物车实现的，SESSION的编译方法，是学生课程设计的最好材料，最佳参考-The newest student enrollment source code: implemented with shopping cart and session compile method. This is the best materials and reference for student project development.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002661s ]
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:0.097272s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002396s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002287s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001836s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004008s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001517s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003200s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014693s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001961s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 303151 [ RunTime:0.001249s ]
