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MonicaManoharan-9413 avatar image
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MonicaManoharan-9413 asked AnnuKumari-MSFT commented

Discrepency in Join and Lookup in Azure Data Factory

Hello Team,

I have a look up which has two filter conditions and then a derived column that has the condition isMatch() for all the output rows. Based on the derived column value, there is a conditional split. The Derived column is actually returning the value "False", whereas the expected value is "True".

So, I tried replacing the Lookup activity with Inner join and that is actually returning the correct row matching with the input. Can you please let me know why there is a discrepancy in these two activities or the Lookup activity is not working.

Thanks,
Monica.M

azure-data-factory
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Can do with some expansion on what issue you're facing, maybe a screenshot or two

The lookup activity definitely works as expected

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1 Answer

MarkKromer-MSFT avatar image
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MarkKromer-MSFT answered AnnuKumari-MSFT commented

Lookup is a left outer join in ADF

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Hi @MonicaManoharan-9413 ,
We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet .In case if you have any resolution please do share that same with the community as it can be helpful to others . Otherwise, will respond back with the more details and we will try to help

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