本实验模拟文件的创建和释放过程。文件的物理块分配使用混合索引结构描述。混合索引结构是将单级索引和多级索引相结合而形成的一种索引结构。-The experimental simulation document creation and release process. Document the physical block allocation using a hybrid index structure described. Hybrid index structure is a single-stage index and multi-level index to form a kind of combination of index structure.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002096s ]
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:0.089365s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002342s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002399s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003684s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002010s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014857s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002820s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 318981 [ RunTime:0.001233s ]
