统计字符数组中字母，数字，符号的出现个数
char[] c = { 2 , c , $ , 4 , 7 , Z , j , ~ , p , c } -Statistics character array of letters, numbers, symbols, the emergence of the number of char [] c = (2, c, $, 4, 7, Z, j, ~, p, c)
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001002s ]
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:0.093628s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.003196s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001113s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000961s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003003s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000849s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003651s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014747s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001091s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 253960 [ RunTime:0.013150s ]
