text: DROP TABLE IF EXISTS dnzb_failures;
  CREATE TABLE dnzb_failures (
    id         INT(11) UNSIGNED        NOT NULL AUTO_INCREMENT,
    userid     INT(11) UNSIGNED        NOT NULL,
    guid       VARCHAR(50)             NOT NULL,
    PRIMARY KEY (id),
    UNIQUE INDEX ux_dnzb_failures (userid, guid)
  )
    ENGINE          = MYISAM
    DEFAULT CHARSET = utf8
    COLLATE         = utf8_unicode_ci
    AUTO_INCREMENT  = 1;