change the insert data type from string to integer or float
add the city stat and store the data to mysql
fixed the switch break
Merge branch 'yesenfei' of https://github.com/fangdiantong/data into yesenfei
add the converter column type map
fixed the code review comments problem
fixed the git code  merge
Merge pull request #55 from fangdiantong/yesenfei

change the insert data type from string to integer or float