Clarify on Subtractive Component & EntityArchetypeQuery

From doc

As I understand it, subtractive component allow us to iterate through chunk of archetype that have "Required components" and ignore all entity included "subtractive components".

Then how is it different from EntityArchetypeQuery?

 

I only assume, that group subtractive comopnents were developed before EntityArchetypeQuery.
However, you still can use jobs triggered by groups with subtractive comopnents (or without), without need using EntityArchetypeQuery. So it may have own use.

 

All filtering API results in a chunk query. Chunk is the most granular unit before we are allowed by the lib to iterate its content. Subtractive component goes to None query, ignoring all chunks (not all entity) with that component.