功能最全的能够运行四则运算的计算器且利用堆栈实现带括号的功能-The most versatile able to run the calculator and the four operations with the use of the stack to achieve the function in parentheses
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001271s ]
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:0.089844s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001166s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002177s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001190s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003572s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000982s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003223s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015940s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001201s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 286007 [ RunTime:0.001265s ]
