Input data sets go through some operation (filtering, aggregation, or a join) in the early stages of the WebSphere DataStage job that reduces their size.
在WebSphereDataStage作业的早期阶段中，输入数据要经过一些操作的处理(过滤、聚合或连接)，这些操作会缩小数据的规模。
Input data sets go through some operation (filtering, aggregation, or a join) in the early stages of the WebSphere DataStage job that reduces their size.
在WebSphereDataStage作业的早期阶段中，输入数据要经过一些操作的处理(过滤、聚合或连接)，这些操作会缩小数据的规模。
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