DATASTAGE——Surrogate Key Stage用法

 功能:产生自增字段。

        The Surrogate Key stage generates key columns for an existing data set. You can specify certain characteristics of the key sequence. The stage generates sequentially incrementing unique integers from a given starting point. The existing columns of the data set are passed straight through the stage. 

        需要设置的部分:
        Stage->Properties:
      

        Output->Mapping:
       

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