把PTable的所有value拼接上key,并打平成一个SchemaPCollection Args: ptype (PTable): 输入数据集,需要是一个PTable,key,value都必须为字典 Returns: SchemaPCollection: 返回的SchemaPCollection拥有key,value所有的字段,如果key,value中有相同字段,则以value为准 Examples: >>> from bigflow import base, schema >>> p = base.Pi
(ptype)
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