用Java实现对数据库的连接和操作，一个小的学生成绩管理的程序-With the Java implementation of the database connection and operation of a small student achievement management program
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001381s ]
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:0.089505s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001379s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002433s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001236s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003409s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001125s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004391s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014965s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001153s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 53273 [ RunTime:0.124298s ]
