这是学习数据库时用到的一些资料，由于本人学习有限，所以资料不是很全，但这些都是入门级必备的！-This is the database used to study some of the information, I am learning is limited, so information is not very full, but these are entry-level essential!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001559s ]
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:0.085368s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001244s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001330s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000956s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003386s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001191s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006018s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015257s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001261s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 291193 [ RunTime:0.057249s ]
