[datatable-help] Possible addition of merge=TRUE to X[Y, j, merge=TRUE]

Matthew Dowle mdowle at mdowle.plus.com
Mon Oct 8 12:44:24 CEST 2012


All,

Interesting question. Any views?

http://stackoverflow.com/questions/12773822/why-does-xy-join-of-data-tables-not-allow-a-full-outer-join-or-a-left-join

It's X[Y,j,merge=TRUE] (i.e. when j is present and inspected for the
columns it uses, combined with merge=TRUE) that I can see being useful,
perhaps.

Matthew





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