CREATE TABLE responses ( response_id integer NOT NULL PRIMARY KEY, user_id integer NOT NULL default '0', changed datetime NOT NULL default '0000-00-00 00:00:00', del tinyint NOT NULL default '0', name varchar(255) NOT NULL, data text NOT NULL, is_html tinyint NOT NULL default '0' ); CREATE UNIQUE INDEX ix_responses_user_id ON responses(user_id, del);