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Do not update data if key exists

I need to lookup a key and insert record if it does not exist. The record should not be updated if the key exists. Is there a component I can use (I cannot use the Table Update because the data gets updated if the key exists)

2 Community Answers

Matillion Agent  

Kalyan Arangam —

Hi Shilpa,

You may use the EXCEPT transformation component to compare your incoming(primary) dataset with the existing (comparing) table.

Alternatively, use the DETECT CHANGES component to compare both tables, identify new records and then the TABLE OUTPUT component to append the data to your comparison-table.

Hope that helps.


Shilpa Siddhanti —

The 'DETECT CHANGES' component with a combination of the filter component(to identify new rows) and Table Output Component(to append the new rows) worked.

Thank you for your quick response Kalyan.

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