_diff         | id | product  | category    | price | stock | updated_at          
--------------+----+----------+-------------+-------+-------+---------------------
changed-left  | 2  | Cable    | electronics | 5     | 24    | 2025-01-01T08:00:00Z
changed-right | 2  | Cable    | electronics | 5     | 20    | 2025-02-01T08:00:00Z
removed       | 3  | Notebook | office      | 3.2   | 50    | 2025-01-01T08:00:00Z
added         | 4  | Pen      | office      | 1.5   | 80    | 2025-02-01T08:00:00Z