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:0.001394s ]
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:0.086319s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001216s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001881s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001124s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003702s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000975s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003168s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014637s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001540s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 150179 [ RunTime:0.003821s ]
