统计字符串中字母和数字的个数，对自学汇编的人会有帮助的，其中有如何输入字符串，如何输出两位数．-statistics strings of letters and digits of the number, the compilation of self-help, which is how the input string, how to double-digit output.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001218s ]
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:0.097380s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001162s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001893s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001194s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003573s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001059s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003215s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015216s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001464s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 187563 [ RunTime:0.001486s ]
