最经典的数据库高级教材 数据库概念（第4版）实验 用于数据库学习和实验 强烈推荐-classic database senior materials database concept (Release 4) experimental database for the study and experiment strongly recommended
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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:0.073292s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001010s ]
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SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000903s ]
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