长整数类，数据成员有一个指针，一个整数size，可以存放100位以上整数，可以做加法乘法运算-long integer, data members of a pointer, an integer size, can be kept above 100 integer, the additive can do multiplication
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001204s ]
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:0.087173s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000957s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001139s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001017s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003072s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000868s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004031s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014655s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001069s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 150179 [ RunTime:0.029234s ]
