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| From | Barbara Romano <bar.romano@gmail.com> |
| To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
| Subject | Re: st: Puzzling error with merge |
| Date | Mon, 13 Jan 2014 14:23:12 +0100 |
Hi David , it happened to me last week. After a while I realized that there were some “missing” in my id (key variable). I deleted all the observations with the missing id, than everything worked out. Barbara Il giorno 13/gen/2014, alle ore 13:42, David Hoaglin <dchoaglin@gmail.com> ha scritto: > Dear All, > > I attempted to merge two datasets, each of which has 247 observations, > with the following command: > > merge 1:1 StudyID using Sheet2 > > (here "Sheet2" is the last part of the fully qualified name of the > file, recently imported from Excel). > > I received the following error message: "variable StudyID does not > uniquely identify observations in the master data". > > I then tabulated StudyID in the two files. Each output showed no > frequency other than 1 and a total of 247 observations. > > What am I doing wrong? > > I am using Stata 13.1. > > Thanks for your help. > > David Hoaglin > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/faqs/resources/statalist-faq/ > * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/