DROP TABLE IF EXISTS product_promotion;

-- DROP SEQUENCE IF EXISTS product_promotion_product_promotion_id_seq;
-- CREATE SEQUENCE product_promotion_product_promotion_id_seq;


CREATE TABLE product_promotion (
  "product_promotion_id" int PRIMARY KEY GENERATED BY DEFAULT AS IDENTITY, -- SERIAL PRIMARY KEY
  "product_id" int check ("product_id" > 0) NOT NULL,
  "user_group_id" int check ("user_group_id" > 0) NOT NULL,
  "priority" int NOT NULL DEFAULT 1,
  "price" decimal(15,4) NOT NULL DEFAULT 0.0000,
  "from_date" date,
  "to_date" date
  -- PRIMARY KEY("product_promotion_id")
);

CREATE INDEX "product_promotion_product_id" ON product_promotion ("product_id");
CREATE INDEX "product_promotion_user_group_id" ON product_promotion ("user_group_id");
SELECT setval('product_promotion_product_promotion_id_seq', 1, true); -- last inserted id by sample data