<Room database returns null with nested realtions ...

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Room database returns null with nested realtions and left join
I'm currently implementing a Room database in my Android application and facing an unexpected behavior when retrieving entities. I have a Cv entity that can have multiple associated Section entities. My goal is to retrieve all Cv records, even those that do not have any corresponding Section entries.
Problem:
When a Cv does not have any associated Section, Room returns a default Cv object populated with null or default values for its properties. However, when there are associated Section...