城市链表的求解,通过城市查找坐标,通过坐标查找城市,以及两座城市之间的距离.-city Chain solution through urban search coordinates coordinates search through the city and the two cities in the distance.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001029s ]
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:0.060401s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001261s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002021s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001441s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005157s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001201s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006926s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015834s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001247s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 159065 [ RunTime:0.015851s ]
