CREATE TABLE {$NAMESPACE}_calendar.calendar_notification (
  id INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
  eventPHID VARBINARY(64) NOT NULL,
  utcInitialEpoch INT UNSIGNED NOT NULL,
  targetPHID VARBINARY(64) NOT NULL,
  didNotifyEpoch INT UNSIGNED NOT NULL,
  UNIQUE KEY `key_notify` (eventPHID, utcInitialEpoch, targetPHID)
) ENGINE=InnoDB, COLLATE {$COLLATE_TEXT};