You want to control parallelization in a calculation view. Which action is mandatory when you define the parallelization block?
Select an option, then click Submit answer.
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Define a union node as the start of the parallelization block.
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Define a projection node as the end of the parallelization block.
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Assign tables as the only data sources in the nodes that start the parallelization block.
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Define a source column as partitioning value in the start node of the parallelization block.
