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

[Matthew Dowle]

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