alter table sales_ledger_product
    add freight_unit_price decimal(16, 2) null comment '运费单价' after tax_inclusive_total_price,
    add total_freight decimal(16, 2) null comment '总运费' after freight_unit_price;

alter table sales_ledger_product_template
    add freight_unit_price decimal(16, 2) null comment '运费单价' after tax_inclusive_total_price,
    add total_freight decimal(16, 2) null comment '总运费' after freight_unit_price;