Union Transformation

Why Union Transformation is active while it passes all the rows through it.

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etluser

  • Dec 27th, 2009
 

By definition, a transformation is treated as active if the number of input rows do not match the number of output rows.

Since Union transoformation accepts input rows from multiple pieplines, and combines the rows, input rows are always greater than the output rows. Hence, it's an active one. 

By logical definition, though, Union transformation acts just like a passive transformation as it passes through all the records coming in. 

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