text: ALTER TABLE "sprint" ADD COLUMN "board" TEXT NOT NULL DEFAULT '';
  CREATE TABLE sprint_board (
      id SERIAL NOT NULL, 
      board TEXT NOT NULL, 
      name TEXT NOT NULL, 
      user_id INTEGER, 
      PRIMARY KEY (id), 
      CONSTRAINT board_name_user_id_unique UNIQUE (name, user_id), 
      FOREIGN KEY(user_id) REFERENCES "user" (id)
  );
  