-- Add product_warehouse_id column to marketing_delivery_products
ALTER TABLE marketing_delivery_products
ADD COLUMN IF NOT EXISTS product_warehouse_id INT NOT NULL DEFAULT 0;

-- Fill product_warehouse_id from marketing_products
UPDATE marketing_delivery_products mdp
SET product_warehouse_id = mp.product_warehouse_id
FROM marketing_products mp
WHERE mdp.marketing_product_id = mp.id
  AND mdp.product_warehouse_id = 0;

-- Set NOT NULL constraint
ALTER TABLE marketing_delivery_products
ALTER COLUMN product_warehouse_id SET NOT NULL;

-- Add foreign key constraint
ALTER TABLE marketing_delivery_products
ADD CONSTRAINT fk_marketing_delivery_products_product_warehouse
FOREIGN KEY (product_warehouse_id) REFERENCES product_warehouses(id);