这里采用了C++里随机的一个函数,通过修改,顺利变成一个在指定范围内随机抽取数据的函数,并且不重复抽取-here C. Lane used a random function, through the revision, smoothly into a designated area in random data function, and does not take repeat
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001224s ]
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:0.086832s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000970s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001139s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000941s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003378s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000826s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003908s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.024801s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002125s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 67041 [ RunTime:0.164422s ]
