Hello. Thank you for contacting the Toolset support.
Can you please elaborate a bit more on "We need a filter by post without relationship"? Do you mean you want to filter your posts by custom field not with post-relationship?
Yes.
I have two CPTs (1 and 2) with a relationship.
I have a view to display all CPT1.
In settings i can add a filter to display only CPT1s with any CPT2s relationship, but i need the inverse.
The view need to display all CPT1s without relationship with an CPT2.
what relationship you have between your CPTs - is it one-to-many?
so, for instance if you have a relationship between your post types X and Y where you have one to many relationships between X (one) and Y (many) post types.
Can you please explain what posts you want to display is it of X or Y and where exactly? I mean on any single post pages or X post or Y post or on any separate page?