2 slot_revision_id
INTEGER NOT NULL,
3 slot_role_id
SMALLINT NOT NULL,
4 slot_content_id
INTEGER NOT NULL,
5 slot_origin
INTEGER NOT NULL,
6 PRIMARY KEY (slot_revision_id
, slot_role_id
)
9 CREATE INDEX slot_revision_origin_role
ON slots (slot_revision_id
, slot_origin
, slot_role_id
);