C语言实现JPEG压缩与解压缩，对学习图像处理有一定的参考意义。代码比较老，但是能说明问题。-C Language JPEG compression and decompression, to learn to deal with images as a reference significance. Comparing the old code, but illustrative.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001047s ]
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:0.087861s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001756s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002116s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001048s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004518s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000993s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006053s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.021812s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001639s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 307890 [ RunTime:0.015445s ]
