CREATE TABLE "pr_items_for_bidding" ( "id" serial PRIMARY KEY NOT NULL, "bidding_id" integer NOT NULL, "item_number" varchar(50), "project_info" varchar(300), "item_info" varchar(300), "shi" varchar(100), "requested_delivery_date" date, "annual_unit_price" numeric(15, 2), "currency" varchar(3) DEFAULT 'KRW', "quantity" numeric(10, 2), "quantity_unit" "quantity_unit", "total_weight" numeric(10, 2), "weight_unit" "weight_unit", "material_description" text, "pr_number" varchar(50), "has_spec_document" boolean DEFAULT false, "created_at" timestamp DEFAULT now() NOT NULL, "updated_at" timestamp DEFAULT now() NOT NULL ); --> statement-breakpoint ALTER TABLE "bidding_documents" DROP CONSTRAINT "bidding_documents_pr_item_id_pr_items_id_fk"; --> statement-breakpoint ALTER TABLE "company_pr_item_bids" DROP CONSTRAINT "company_pr_item_bids_pr_item_id_pr_items_id_fk"; --> statement-breakpoint ALTER TABLE "pr_items_for_bidding" ADD CONSTRAINT "pr_items_for_bidding_bidding_id_biddings_id_fk" FOREIGN KEY ("bidding_id") REFERENCES "public"."biddings"("id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint ALTER TABLE "bidding_documents" ADD CONSTRAINT "bidding_documents_pr_item_id_pr_items_for_bidding_id_fk" FOREIGN KEY ("pr_item_id") REFERENCES "public"."pr_items_for_bidding"("id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint ALTER TABLE "company_pr_item_bids" ADD CONSTRAINT "company_pr_item_bids_pr_item_id_pr_items_for_bidding_id_fk" FOREIGN KEY ("pr_item_id") REFERENCES "public"."pr_items_for_bidding"("id") ON DELETE no action ON UPDATE no action;