基于SQL后台数据库开发的，平台是PB，一个图书 馆管理系统，希望对初学PB与SQL的朋友有所帮助-background based on SQL database development, the platform of PB, a library management system, and I hope to beginners and SQL PB help of a friend
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001252s ]
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:0.083267s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001027s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001142s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001047s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003220s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000884s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003711s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015136s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001202s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 296873 [ RunTime:0.014180s ]
