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st: RE: how add (merge!?) variables to master data set
Incorrect syntax. Look at the help again
and then delete the first "using".
> I have a actually quite simple problem, but my STATA (version
> 7) does not understand me:
> I want to add 3 variables from a different (using) data set,
> which has only 1 observation, to my master data set in memory
> with 28 observations.
> I tried:
> merge using var1 var2 var3 using
> but I get the error message "variable var1 not found" or
> "var1 ambiguous abbreviation" (which is definitely not true).
> But it seems to me that "joinby" or "append" are even less
> appropriate commands.
> It would be much more efficient if it worked somhow this way,
> because I must make a similar operation with 9 data sets.
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