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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