很好的unix教程，从简单到复杂，原理明了，还有许多例子，无论对于初学者还是精通者都是很好的一部教程-Good unix tutorial, from the simple to the complex, the principle to understand, there are many examples, both for the beginner or are proficient in a very good tutorial
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002094s ]
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:0.090302s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000992s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001132s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001092s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003138s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000898s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003736s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016292s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001149s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 126313 [ RunTime:0.014896s ]
