清洗数据cd C:\Download\1
fs *.zip
foreach f in `r(files)'{
unzipfile `f'
}
*
fs *.xlsx
foreach f in `r(files)'{
import excel using "`f'" , firstrow clear
qui{
labone, n(1)
drop in 1/2
cap g year = substr(EndDate,1,4)
qui foreach v of var * {
cap destring `v', replace
}
cap ren SgnYear year
cap ren Symbol Stkcd
cap order year
cap order Stkcd
sca f_temp = "`f'"
loc fname = usubinstr(f_temp,".xlsx","",.)
compress
}
di ".........................................."
save "`fname'.dta", replace
d
ta y
}得到结果仅整理部分结果：Contains data from dm_areahigtecprotmy.dta
Observations: 639
Variables: 19 8 Mar 2024 15:28
------------------------------------------------------------------------------------
Variable Storage Display Value
name type format label Variable label
------------------------------------------------------------------------------------
year int %10.0g
………………………………
