I2C详细源代码，包括，初始化，开始信号和结束信号，delay等需要注意的地方。-I2C detailed source code, including initialization, the start signal and end signal, delay the need for attention and so on.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001353s ]
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:0.095085s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001231s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001918s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001246s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003559s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001054s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003275s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018563s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001844s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 137564 [ RunTime:0.001383s ]
