ACM培训资料，对acm常遇问题进行讲解分析，并给出一定的问题解决方法。-ACM training materials, frequently encountered problems on the acm explain the analysis and are given a certain degree of problem-solving approach
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001180s ]
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:0.072746s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001403s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001202s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000940s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003211s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000893s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004461s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014705s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001043s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 245832 [ RunTime:0.011314s ]
