写的是一个语法分析器 是用LR分析法分析一个布尔表达式，最后用逆波兰是输出，希望对大家有用-writes of a parser is LR analysis for a Boolean expression, with the final output is the inverse of Poland, a member of the useful!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002308s ]
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:0.084121s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001970s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001934s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002191s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003794s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001832s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003262s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014465s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002424s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 297941 [ RunTime:0.001134s ]
