用DSP做电梯的变频器问题解答,前段时间做了一点工作的经验之谈，希望对初学者有用-Inverter with DSP to do the elevator questions, some time ago to do a little work, from experience, want to be useful for beginners
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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:0.091759s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001290s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001291s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003601s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001050s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001770s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 233773 [ RunTime:0.001466s ]
