自己测试access数据库压缩的一个小程序，
定期压缩access数据库，可以解决access数据库膨胀的问题-access their database compression testing of a small procedures, compressed database access, database access can solve the problem of expansion
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001206s ]
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:0.098059s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001121s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001867s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001100s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003525s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001003s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003150s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014578s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001269s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 237339 [ RunTime:0.001450s ]
