Once we have examined and sorted the datasets we can merge them. The syntax below does this. By default, Stata will allow cases to come from any of the three datasets(for example). There are options that will allow you to control which datasets the cases come from.
将 student.dta, economy.dta, math.dta 纵向拼接起来
use student , clear
foreach file in economy math {
append using “`file’”
}或者
local flist economy math //先将文件名赋于宏 flist
foreach file in `flist’ {
append using “`file’”
}
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