# Add UID and SEQUENCE columns for use with iCalendar ALTER TABLE %DB_TBL_PREFIX%entry ADD COLUMN ical_uid varchar(255) DEFAULT '' NOT NULL, ADD COLUMN ical_sequence smallint DEFAULT 0 NOT NULL; ALTER TABLE %DB_TBL_PREFIX%repeat ADD COLUMN ical_uid varchar(255) DEFAULT '' NOT NULL, ADD COLUMN ical_sequence smallint DEFAULT 0 NOT NULL;