用编译原理方法计算表达式的值,例如(2+3)*84+3这样的复杂表达式
深入体现了面向对象的方法,代码可以很容易进行overwrite-with compiler theory calculated the value of the expression. For example, (2)* 84 3 such a complex expression reflects the depth of object-oriented methods, code can easily overwrite
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000924s ]
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:0.073761s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001033s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001347s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001120s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003241s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000990s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004144s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014474s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001200s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 212972 [ RunTime:0.027120s ]
