[Introspection] ID = (Scalar, RelationField)

[janpio]

mix of https://github.com/prisma/prisma-engine/issues/253 and https://github.com/prisma/prisma-engine/issues/252

[sorenbs]

Depends on prisma/specs#345

[sorenbs]

Temporary Guardrail

Probably similar guardrail as https://github.com/prisma/prisma-engine/issues/252

[mavilein]

@do4gr will check whether the guardrail is in place

[janpio]

Next step:
Create a SQL schema that has this problem: A compound Primary Key, where one of the columns, is also a Foreign Key (e.g. id + user_id)

[janpio]

Turns out we have a lot of these in the Introspection CI schemas:
#1681

[do4gr]

Closed via prisma/prisma-engines#578