一个计算器程序，利用了编译原理的知识，可以用来作为一个例子，学习编译原理-a calculator procedure, and use of compiler theory of knowledge, could be used as an example to study compiler theory
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.018991s ]
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:0.230238s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.010814s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001224s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.005653s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004959s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000932s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003738s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.017142s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001159s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 214409 [ RunTime:0.014845s ]
