选取缓时变维度资料表，并指定其索引键资料行。

Select a slowly changing dimension table and specify its key columns.

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针对选取的缓时变维度资料行，选取变更的类型。

Select the type of change for selected slowly changing dimension columns.

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针对选取的缓时变维度资料行，选取变更的类型。

Select the type of change for selected slowly changing dimension columns.

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