演示用内存映射的方式读取wave波形文件,还有内存DC等等，大文件读取速度非常快-demonstration with the memory mapping wave waveform read documents and memory DC, and so on. read large files very rapidly
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001326s ]
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:0.089798s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001246s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001215s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003587s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001041s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014926s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002693s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 151237 [ RunTime:0.001659s ]
