本例子演示了如何利用f90接口来读取已经创建的3维变量，并检查读写正确与否
-This example shows how to use the f90 interface to read the already created three-dimensional variable, and check whether or not to read and write properly
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001296s ]
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:0.086736s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001226s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001869s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001163s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003653s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001184s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003214s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014982s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001420s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 287309 [ RunTime:0.001265s ]
