An upstream loader retried without idempotency, so some invoices were inserted more than once. Two rows are duplicates when vendor_id, invoice_number and amount all match. Return one row per duplicate group with the number of copies and the earliest loaded_at.

Input schema

Example

Constraints

• Groups with a single row are not duplicates and must not appear
• Order by copies descending, then vendor_id, then invoice_number
• Up to 40,000,000 rows