ALTER TABLE seven_signs_status
  DROP COLUMN dateupdate
, DROP COLUMN calendar;

-- ALTER TABLE seven_signs_status
--   ADD COLUMN dateupdate DATETIME NULL
-- , ADD COLUMN calendar   DATETIME NOT NULL DEFAULT '2999-12-31 23:59:59';
-- 
-- UPDATE TABLE seven_signs_status           ,seven_signs_calendar
--          SET seven_signs_status.dateupdate=seven_signs_calendar.dateupdate
--            , seven_signs_status.calendar  =seven_signs_calendar.calendar
--        WHERE seven_signs_status.id        =seven_signs_calendar.rowid;
-- 
-- ALTER TABLE        seven_signs_calendar
--   RENAME TO _trash_seven_signs_calendar;
