ALTER TABLE kamailio.acc_trash CHANGE COLUMN callid callid varchar(255) NOT NULL DEFAULT '';
ALTER TABLE kamailio.acc_backup CHANGE COLUMN callid callid varchar(255) NOT NULL DEFAULT '';
ALTER TABLE accounting.acc_trash CHANGE COLUMN callid callid varchar(255) NOT NULL DEFAULT '';
ALTER TABLE accounting.acc_backup CHANGE COLUMN callid callid varchar(255) NOT NULL DEFAULT ''; 
