从RINEX格式的GPS观测文件（即O文件）中分割提取想要的某段观测数据的C++程序-GPS observations from the RINEX format files (ie O file) to extract the desired data in a certain period of observation C++ program
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001048s ]
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:0.103600s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001882s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002094s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001745s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.006335s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001358s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004114s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.025019s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001734s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 60195 [ RunTime:0.032935s ]
