Question

MySQL version 5.1.63-cll
Using phpmyadmin to edit

So i have this table ps_layered_price_index
i want to edit/update column:-

price_min AND
price_max 
(updating the current value+10)

where column(id_product) = ALL

Answer 1

If you want to update every row of your table, then you could try something like this :

UPDATE 
 ps_layered_price_index
SET 
 price_min = price_min + 10,
 price_max = price_max + 10

For a single row :

UPDATE 
 ps_layered_price_index
SET 
 price_min = price_min + 10,
 price_max = price_max + 10
WHERE 
 id_product = 87