The above is incorrect. The type can be anything else but it can still be (part of) the primary key. The KeyColumnDef type only means "this is nothing else than a primary key", i.e. basically the same as OmitColumnDef.
Instead, the key boolean attribute should be used.
https://github.com/LukasZahradnik/deep-db-learning/blob/a52d83dcb086377e46cc9346466c7ad3a8f04b3f/db_transformer/ndata/dataset.py#L98
The above is incorrect. The type can be anything else but it can still be (part of) the primary key. The KeyColumnDef type only means "this is nothing else than a primary key", i.e. basically the same as OmitColumnDef.
Instead, the
keyboolean attribute should be used.