Eduard, Details of the issue raised are in this question.
http://stackoverflow.com/questions/15769837/ On Tue, Oct 8, 2013 at 10:47 PM, Eduard Antonyan <[email protected]>wrote: > I don't think I understand what secondary keys are (supposed to be), can > someone who knows please elaborate? > > > On Sun, Oct 6, 2013 at 12:17 AM, Chinmay Patil <[email protected]>wrote: > >> Hi devs, >> >> I was wondering if there are any plans to implement this feature. >> >> >> https://r-forge.r-project.org/tracker/index.php?func=detail&aid=1007&group_id=240&atid=978 >> >> Alternatively, is there a way to refer to key of the data.table object in >> "J" function used for subsetting? >> >> _______________________________________________ >> datatable-help mailing list >> [email protected] >> >> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help >> > >
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