Merge two datasets with creation of an identifier

[smantha]

In here you are not merging the datasets but concatenating one to the bottom of the other. What about the overlapping records?

[_MVB_]

@smantha yes, I should have used a concatenating, not merging.

Overlapping records are not an issue, there is a purpose of why these 1,000 records from dataset2 needed on the final dataset. They would be exactly same, because they were outputted in earlier steps from the dataset1. I just need a final dataset to have 11,000 records with an indicator which would be used later to differentiate whether it is coming from dataset1 or dataset 2. 

[Patrick]

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@_MVB_ wrote:

@smantha yes, I should have used a concatenating, not merging.

Overlapping records are not an issue, there is a purpose of why these 1,000 records from dataset2 needed on the final dataset. They would be exactly same, because they were outputted in earlier steps from the dataset1. I just need a final dataset to have 11,000 records with an indicator which would be used later to differentiate whether it is coming from dataset1 or dataset 2. 

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Then look again at what @Reeza already proposed because that's doing what you're asking for.