_merge might exist in the _other_ dataset. 
Nick 
[email protected] 
Sergiy Radyakin
 
> Type
> des _merge
> to see if you have this variable already
> 
> Type
> drop _merge
> to drop this variable
> 
> Read help for -merge- and -update-
 
Lucy @ Mac
> > Regarding the -merge- question where I have already 
> performed a merge
> > function from A.dta to B.dta, whenever I try to merge the 
> dataset again, I
> > am told that "_merge already defined".
> >
> > However, I cannot locate the _merge variable in the dataset 
> and thus 
> > cannot
> > drop it or rename it.  Anybody got a reason for this phenomenon??
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