Upsert to Warehouse using copy activity vs notebook

Hi Hamidr,

this really depends on the type of workload and how complex your logic is.

Both options will get the job done, but they behave a bit differently in practice.

 Using Copy Activity (Upsert)

• This approach relies on Fabric’s built-in data movement engine, which is generally optimized for performance.
• It works best when your logic is straightforward, such as a simple key-based upsert using a column like  EventID.
• Since it has less execution overhead, it’s usually a good fit for frequent runs (like every 15 minutes).

Using Notebook with MERGE

• A notebook gives you more flexibility, especially if your upsert logic involves additional conditions or transformations.
• You can fully control how records are inserted or updated using SQL MERGE.
• That said, it may introduce a bit more overhead due to compute and execution setup.

Thanks,
prashanth