have more than one value with price=20 your going to have to makethat each observation unique or drop one since merging m:m makes little sense and the merging process requires at least one dataset to be uniquely identified with regard to the variable your are matching the datasets with. hop...
1000000 4 5 8 I have put the two datasets into one dataset using "Append", however, how can I distinguish the firms from different regions since they have the same code? Is it possible to generate a new variable with the prefix before the code, for example, "german1" "france1" etc....
September 2009 18:37 >> An: statalist@hsphsun2.harvard.edu >> Betreff: st: How to get rid of duplicate individuals in a dataset? >> >> Dear all, >> >> I had two datasets of partially overlapping individuals (and their >> characteristics) which I merged into 1 file using append. ...
1000000 4 5 8 I have put the two datasets into one dataset using "Append", however, how can I distinguish the firms from different regions since they have the same code? Is it possible to generate a new variable with the prefix before the code, for example, "german1" "france1" etc....