提供I2C总线初始化、工作时的启始位、结束位、提供I2C总线的时钟信号，并返回在时钟电平为高期间 SDA信号线上状态。本函数可用于数据发送，也可用于数据接收-provide I2C bus initialization, the Start-end, provide the I2C bus clock signal, the clock and return to the high-level signal line during the SDA state. This function can be used to transmit data, can also be used for data reception
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001168s ]
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:0.078234s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001046s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001157s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000999s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003093s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000842s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003665s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.024639s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001612s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 288919 [ RunTime:0.019233s ]
