数据库试验题目，关于学生管理系统的，用的时候请将DB1导入到SQL数据库中-database test subject for the student management system, the time I would be grateful if DB1 Introduction to SQL databases
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001864s ]
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:0.092391s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001254s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001968s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001251s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003566s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001082s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003223s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014350s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001333s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 121500 [ RunTime:0.001128s ]
