① 对输入文法，由程序自动构造FIRST FOLLOW集
② 对输入文法，由程序自动生成它的LL(1)分析表；
③ 对于给定的输入串，应能判断识别该串是否为给定文法的句型。-① the input grammar, automatically constructed by the procedures set FIRST FOLLOW ② the input grammar, it is automatically generated by the process of LL (1) analysis table ③ For a given input strings, should be able to identify the string to determine whether a given grammar sentence.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001110s ]
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:0.063503s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001091s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001192s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001042s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003276s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000958s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003797s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.024128s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001710s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 136139 [ RunTime:0.013810s ]
