-- Place your SQL code here
ALTER TABLE `vn`.`itemType` 
ADD COLUMN `isMergeable` TINYINT(1) NOT NULL DEFAULT 1 AFTER `maxRefs`;

ALTER TABLE `vn`.`itemType` 
CHANGE COLUMN `isMergeable` `isMergeable` TINYINT(1) NOT NULL DEFAULT 1 COMMENT 'Articulos que al mergear los tickets se fusionara la linea' ;

UPDATE `vn`.`itemType` SET `isMergeable` = '0' WHERE (`code` = 'GEN');