use balance,replace merge m:n Stkcd accper typrep using income keep if _m==3 drop _m merge 1:1 Stkcd accper typrep using cashflow keep if _m==3 drop _m save finance,replace 纵向合并 use file1,replace append using file2 PS:要求纵向合并的文件同一变量属性一致,比如合并前两个文件里的变...
file Replace missing data in memory with data from file Replace nonmissing data in memory with data from file Drop observations in dataset on disk that do not match 第1、3、4项都与append命令下的选项相同;其它几项是merge命令独特的选项 横向合并与纵向合并的异同 横向数据合并的基本命令是merge。利用...
. use mydata4,clear. keep id economy. save "economy.dta",replace. use economy,clear. sort id. merge id using student(note: you are using old merge syntax; see [D] merge for new syntax). tab _merge_merge | Freq. Percent Cum.---+---3 | 5 100.00 100.00---+---Total | 5 100...
作为一名R用户,我现在正在使用资源学习merge,并且对Stata命令感到困惑。在R中,我不必担心错误地合并数据,因为它无论如何都会合并所有内容。我不需要担心公共列是否包含任何重复的列,因为Y数据帧将合并到X数据帧中的每个重复行。(在merge中使用all=FALSE ) 但是对于Stata,在继续合并之前,我需要从X中删除重复的行。在...
(1) minscore(0.95) compress save AMANAMES_Conmee, replace drop if mi(St) keep Stkcd AMANAMES duplicates drop so S save Stkcd_AMANAMES, replace * use 企业跨国并购, clear merge m:m AMANAMES using Stkcd_AMANAMES, nogen order Stkcd year so Stkcd year save 企业跨国并购_匹配2, replace ta...
. merge id using student (note: you are using old merge syntax; see [D] merge for new syntax) . tab _merge _merge | Freq. Percent Cum. ---+--- 3 | 5 100.00 100.00 ---+--- Total | 5 100.00 . drop _merge 4.4 数据重整 ....
然而,这一行代码: merge 1:1 city country using "df_all_cities.csv", nogen keep(1 3) 给我一个错误: . run "/var/folders/jg/k6r503pd64bf15kcf394w5mr0000gn/T//SD44694.000000" file df_all_cities.csv not Stata format r(610); 这是我之前的一个问题的尝试解决方案,这个文件 浏览10提问于...
10、 variable to mark result of merge: Do not copy value lable definition from fileDo not copy notes from fileReplace missing data in memory with data from fileReplace nonmissing data in memory with data from fileDrop observations in dataset on disk that do not match第1、3、4项都与append...
If mattitles is not indicated, the returned weight matrix (e(omega)) will store these weights with a final column providing the numerical ID of units, where this numerical ID is either taken from the unit variable (if this variable is a numerical format), or arranged in alphabetical order ...
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