设有由n个不相同的整数组成的数列，记为:
a(1)、a(2)、……、a(n)且a(i)<>a(j) (i<>j)
例如3，18，7，14，10，12，23，41，16，24。
若存在i1 a (j) (i < > j ) For example 3,18,7,14,10,12,23,41,16,24. If there is i1
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001755s ]
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:0.112215s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001239s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001864s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001226s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003588s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001068s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003194s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014890s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001462s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 260836 [ RunTime:0.001333s ]
