SCD Type 2 tables can be implemented by simply adding a timestamp column to each record without the need for valid-from and valid-to dates, as Delta Lake automatically tracks changes.

To implement an SCD Type 2 table, you should only update the existing record with the new price and not insert a new record, to save storage space and improve performance.

For each price change, insert a new record with the valid-from date set to the current date and the valid-to date set to a future date or null, and update the valid-to date of the previous record to the current date.

SCD Type 2 tables are not suitable for tracking historical changes in product prices; instead, use a Type 1 SCD to overwrite the old price with the new one.