对ARM Cortex-m3系列芯片指令，异常和中断等进行了详细的描述，具有权威性，中文版的。-On the ARM Cortex-m3 series chip instructions, exceptions and interrupts etc. are described in detail, with authority, the Chinese version.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000928s ]
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:0.063026s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001020s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000906s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003315s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000851s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003719s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.013972s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001135s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 161913 [ RunTime:0.014978s ]
