用JAVA开发的数据库底层核心，是学习用JAVA开发数据库系统的必要资料。-with JAVA development of the database underlying core, Java is used to study the development of a database system the necessary information.
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DBApp src emptyprj jdbc util lib config DB build.xml DBApp.prj web dbList.jsp web www.pudn.com.txt
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001390s ]
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:0.083878s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001079s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.008164s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001111s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003321s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000884s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003760s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015526s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001330s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 43056 [ RunTime:0.012283s ]
