1、 便鞋一个函数用于计算两个数相除的结果，要求当被除数为0时，有异常处理部分。-1, slippers a function used to calculate the number of division two results, the requirements for the 0:00 when the dividend, some have abnormal deal.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001898s ]
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:0.086134s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001765s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002081s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003526s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002022s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003888s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015200s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002449s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 153480 [ RunTime:0.001063s ]
