这个程序主要是实现两个字符串的连接，通过动态申请内存空间，并用指针作为参数传递-This procedure is mainly the two realize the connection string, through the dynamic application memory space, and passed as a parameter pointer
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001467s ]
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:0.101021s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001375s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001946s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001450s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003907s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001155s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003235s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014985s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001499s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 290430 [ RunTime:0.001260s ]
