temp

 update products,products_description,临时表名 set products_name = 临时表名.name where products.products_id = products_description.products_id and products.products_model = 临时表名.model 

update products,products_description,templink 
set products_name = templink.name 
where products.products_id = products_description.products_id
and products.products_model = templink.model








update products,templink 
set products.name = templink.name
where products.model = templink.model