[datatable-help] merge zero row data.table

[G See]

Thanks Arun.  Bug filed:
https://r-forge.r-project.org/tracker/index.php?func=detail&aid=5672&group_id=240&atid=975

On Thu, May 8, 2014 at 6:00 PM, Arunkumar Srinivasan
<aragorn168b at gmail.com> wrote:
> Garrett,
>
> Seems like it works fine in 1.9.2. I'd say it's a bug introduced due to
> changes in 1.9.3. Could you please file it as one? Thanks.
>
> Arun
>
> From: G See gsee000 at gmail.com
> Reply: G See gsee000 at gmail.com
> Date: May 9, 2014 at 12:57:15 AM
> To: datatable-help at lists.r-forge.r-project.org
> datatable-help at lists.r-forge.r-project.org
> Subject:  [datatable-help] merge zero row data.table
>
> Hi,
>
> Is the following error expected?
>
>> library(data.table)
> data.table 1.9.3 For help type: help("data.table")
>> a <- data.table(BOD, key="Time")
>> b <- data.table(BOD, key="Time")[Time < 0] # zero row data.table
>> merge(a,b, all=TRUE) # works fine
> Time demand.x demand.y
> 1: 1 8.3 NA
> 2: 2 10.3 NA
> 3: 3 19.0 NA
> 4: 4 16.0 NA
> 5: 5 15.6 NA
> 6: 7 19.8 NA
>> merge(b,a, all=TRUE) # error
> Error in setcolorder(dt, c(setdiff(names(dt), end), end)) :
> neworder is length 2 but x has 3 columns.
>
> Thanks,
> Garrett
>
> p.s. using svn Rev. 1263
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