ALTER TABLE "postcode_search" ADD COLUMN "last_updated_at" timestamp;--> statement-breakpoint
UPDATE "postcode_search" SET "last_updated_at" = "created_at";--> statement-breakpoint
ALTER TABLE "postcode_search" ALTER COLUMN "last_updated_at" SET DEFAULT now();--> statement-breakpoint
ALTER TABLE "postcode_search" ALTER COLUMN "last_updated_at" SET NOT NULL;