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It is possible with some restrictions. Let's say you agree there are max 5 columns in your LOV-s. That way you can easily create LOV to RG colums mapping (what Andreas pointed out).
For example :
1. in design time create RG with dummy columns (for example : c1, c2, c3, c4, c5)
2. in design time create 1 LOV with 5 predefind columns (for example : c1, c2, c3, c4, c5)
3. populate that record group with select (selecting 5 columns. If you do not have 5 columns in your table on which LOV is based just select dummy columns for the rest of the columns) aliasing them as c1, c2, c3, c4, c5 (same as in LOV from step 2)
4. asign that RG to the LOV in step 1
5. in LOV show just "non-dummy" rows form step 3
The rest you already figured it out.
The benefit of this approach is questionable as the same can be done creating more RG and LOV-s in design time. So I believe this is the matter of developer preferences. By the way the concept I described we use on daily bases dealing with LOV-s.