数学表达式计算器，VC 平台操作。能够计算数学公式和表达式，功能比较强大。-mathematical expression calculator, VC platform operators. To calculate mathematical formula and expression, function more powerful.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001276s ]
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:0.089711s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001269s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001226s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004983s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001051s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014727s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001522s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 121467 [ RunTime:0.001388s ]
