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I have a pipeline, which iterates through the query parameters of a REST API and I am using parameters to pass them in the relative URL. When I dont specify any file name in the sink, the pipeline creates new csv for each record and when I specify the file name, it is overwritten everytime.

Is there any way around this?

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Appending rows to the existing file is currently not supported using the Azure data factory.

You can raise a feature request from ADF portal feedback.

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As a workaround,

• You can copy data to different files each time.

• Add another copy activity to merge all the files into a single file.

• Delete all other files generated initially except the final merged file using delete activity.

Refer to this link for details on merging the files.

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