编译原理简单优先的文法的分析，有过程，一目了然，谢谢指教。-compiler priority to the principle of simple grammar analysis, a process, clear, thank you for your excellent suggestion.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001177s ]
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:0.074140s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001260s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001222s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000970s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003087s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000807s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003619s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015375s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001160s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 308027 [ RunTime:0.056212s ]
