与其他PCollection做连接操作,等同于 :func:`bigflow.transforms.join(self, other, *others) ` Args: other (PCollection): 做连接操作的PCollection *others: 更多的PCollection Returns: PCollection: 连接结果 >>> x = _pipeli
(self, other, *others, **options)
source not stored for this graph (policy: none)
no outgoing calls