1. 熟悉C5400的寻址方式 2. 比较利用不同寻址方式的指令执行时间-1. Publishing familiar with the ways of addressing two. Comparing the use of different addressing modes of instruction execution time
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001291s ]
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:0.087982s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001270s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001254s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003609s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001067s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014863s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001419s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 293705 [ RunTime:0.001436s ]
