DataGridView的操作基本全了，对单个cell，行，列，数据连接，极力推荐！-DataGridView basic operation of the whole of a single cell, rows, columns, data connectivity, highly recommended!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001960s ]
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:0.085527s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002172s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001962s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002133s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003712s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002047s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003256s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015009s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002683s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 67863 [ RunTime:0.001145s ]
