id int not_null auto_increment
products_id int not_null
suppliers_id int  not_null
customers_group_id int default(0) not_null
discount_quantity int not_null
discount_supplier_price decimal(10,2) not_null
discount_customer decimal(10,2) not_null
--
primary id
##
engine innodb
character_set utf8mb4
collate utf8mb4_unicode_ci