浙大database课件，数据库原理与应用电子教案，非计算机专业的。-Zheda database software, database and application of the principle of electronic lesson plans, non-computer professional.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001767s ]
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:0.113109s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001275s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001900s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001263s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003975s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001081s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003266s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.017927s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001397s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 209882 [ RunTime:0.001296s ]
