The GraphQL interface does not support introspection as in the spec.

For example the __schema keyword is not available, as well as __typename and type.

Furthermore, it seems the types in the schema (for example created with SQL) are not auto-mapped to GraphQL and need to be manually created (is this on purpose?).

This means, currently the GraphQL language can only be used if the schema is known, unlike SQL where one could SELECT FROM schema:types.

Some minimal queries that would be useful are:

{ __typename }

{ __schema { types { name } } }