Hi!
Welcome to the community!
But when I ran it earlier, why did it show all the rows? In my Google Sheet, I have 132 rows. When I change just one column in one row, I expect the result to show only that one row where the column was changed.
Most likely because you are fetching all rows with the “Get Range Values” module.
It is only my personal opinion, but Airtable is a much better choice for this type of project. With Airtable, you can be sure that each ID is assigned to only one Shopify product and for example, set different scenarios for different changes.
Additionally, you can easily configure delay policies or draft statuses, which won’t cause product updates while you are working on your database.