case guessEmbeddedBelongs:
		if field.OwnerSchema == nil {
			reguessOrErr()
			return
		}
		primarySchema, foreignSchema = relation.FieldSchema, field.OwnerSchema
	case guessHas:
	case guessEmbeddedHas:
		if field.OwnerSchema == nil {
			reguessOrErr()
			return
		}
		primarySchema, foreignSchema = field.OwnerSchema, relation.FieldSchema
	}