Data discrepancies on the free shipping

in the database for the products, theres products that free_shipping = ‘N’ and in my real website they are free shipping, how can sync between them? or change the database value?

  • Free shipping—if you tick this checkbox, the product will be excluded from the shipping cost calculation, as long as the shipping method has the Use for free shipping checkbox ticked.

If you use promotions for free shipping, no actions are required