[datatable-help] Bug in merge for data.table?

[Matthew Dowle]

Looks like a bug to me. Thanks for raising it.
Added here:
https://r-forge.r-project.org/tracker/index.php?func=detail&aid=1241&group_id=240&atid=975
Matthew

On Wed, 2010-12-29 at 13:00 -0500, Joseph Voelkel wrote:
> Consider the following code. It seems like the errors that occur when
> y only has a key column is a bug. Yes?
> 
>  
> 
> DT<-data.table(a=rep(1:2,each=3),b=1:6,key="a")
> 
>  
> 
> y<-J(a=c(0,1),bb=c(10,11),key="a") # y, with key column and one more
> column
> 
> merge(y,DT) # fine
> 
> merge(y,DT,all=TRUE) # fine
> 
>                 
> 
> y<-J(a=c(0,1),key="a") # y with only a key column
> 
> merge(y,DT) # fine
> 
> merge(y,DT,all=TRUE) # error
> 
>  
> 
> 
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