-- Place your SQL code here
ALTER TABLE `vn`.`ticket` 
CHANGE COLUMN `created` `created` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP() ;

ALTER TABLE `vn`.`ticket` 
ADD COLUMN `clonedFrom` INT(11) NULL DEFAULT NULL;

ALTER TABLE `vn`.`entry` 
ADD COLUMN `clonedFrom` INT(11) NULL DEFAULT NULL;

ALTER TABLE `vn`.`travel` 
ADD COLUMN `clonedFrom` INT(11) NULL DEFAULT NULL;