How to not display redundant information in table Views? In a custom module of mine (Drupal 8.2.6), I have two custom entities A and B with a one to many relationship from A to B.
I use Views (table view) to display content of A and B and by default I get this:
Field1 (from A) Field2 (from B)
xxx aaa
yyy bbb
yyy ccc
zzz ddd
I'd like to NOT display yyy the second time.
How can I do that?

[Edit] just an example, instead of what is (by default) on the left, I'd like what is on the right of the picture:
You can try Views Field View module.


Create a "secondary" view of Field2 contextualy filtered by
relationship with EntityA.
In your main view, use Field1 and new Views Field of your "secondary" view (this field type is added by module).
Set up that new Views Field in your view to pass proper argument to "secondary" view contextual filter (and therefore show relevant Field2s related to EntityA)