zentao/db/upgradexuanxuan4.0.sql

ALTER TABLE `zt_im_userdevice` ADD `deviceID` char(40) NOT NULL DEFAULT '' AFTER `device`, ADD `token` char(64) NOT NULL DEFAULT '' AFTER `deviceID`, ADD `validUntil` datetime NULL AFTER `token`;
ALTER TABLE `zt_im_conferenceaction` ADD `device` char(40) NOT NULL DEFAULT 'default' AFTER `date`;