Join module expansion - adding to left/right joins matching data

[marcin2x4]

Was thinking with my peers at work that it might be good to have join module expanded both for desktop and in-database joins.

As for desktop join: left and right join shows only these records that are exclusive to that side of operation. Would it be possible to have also addition of data that is in common?

As for in-db join: db join acts like classic join (left with matching, right with matching data). Would it be possible to get as well only-left, only-right join module?