CREATE TABLE qsetdata
(
  sessid	varchar(40) NOT NULL,
  qsetident	character varying(40) NOT NULL,
  created	integer NOT NULL,
  expires	integer NOT NULL,
  userdata	BYTEA NOT NULL,
  CONSTRAINT idx_sessid PRIMARY KEY (sess_id),
  CONSTRAINT idx_sessid_qsetident UNIQUE (sess_id, qsetident)
);