ALTER TABLE `customers` ADD COLUMN `customers_is_member` CHAR(1) DEFAULT NULL;
INSERT INTO configuration (
        configuration_title, 
        configuration_key, 
        configuration_value, 
        configuration_description, 
        configuration_group_id, 
        sort_order, 
        date_added
) VALUES (
        'Display Member Price', 
        'PRODUCT_LIST_COST', 
        '3', 
        'Do you want to display the Product Member Price', 
        '8', 
        '5', 
        now()
);