fpga时序控制和相关约束，加强对fpga开发时序的理解和控制-fpga timing control, and related constraints, and strengthen fpga development of the understanding and control of timing
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002092s ]
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:0.114524s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001346s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001589s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001171s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003941s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000985s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004169s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.019275s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001643s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 130518 [ RunTime:0.017347s ]
