雅可比算法的算例程序，用简单明了的计算过程展示了雅可比算法的C设计过程。-Jacobi algorithm example program, with a simple and straightforward calculation shows C Jacobi algorithm design process.
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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:0.094031s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001368s ]
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