Which statement best describes the UpsertData function?

Which statement best describes the UpsertData function?

• A. This function returns no value.
• B. This function returns the number of rows added or updated.
• C. This function only works in emails.
• D. This function exports data to an FTP location.

Answer: (B)

UpsertData is used to write to a data extension by either inserting new records or updating existing ones when a matching key is found. After the operation, it returns a value that indicates how many rows were affected. This return value is exactly what you’d use to verify how many records were processed, which is why describing it as returning the number of rows added or updated is the best fit. It isn’t limited to emails and isn’t about exporting data to an FTP location; it operates on data extensions within server-side JavaScript contexts and reflects the result of the upsert, not just a void action.

UpsertData is used to write to a data extension by either inserting new records or updating existing ones when a matching key is found. After the operation, it returns a value that indicates how many rows were affected. This return value is exactly what you’d use to verify how many records were processed, which is why describing it as returning the number of rows added or updated is the best fit. It isn’t limited to emails and isn’t about exporting data to an FTP location; it operates on data extensions within server-side JavaScript contexts and reflects the result of the upsert, not just a void action.