UPDATE  `mdl_modules` SET `visible`=0
WHERE `name` IN ("survey","feedback","audio","testing")

UPDATE `db_name1`.`mdl_modules`, `db_name2`.`mdl_modules`,`db_name3`.`mdl_modules`
SET `visible`=0  WHERE `name`
IN ("survey","feedback","audio","testing")

START TRANSACTION;
  UPDATE  `db_name1`.`mdl_modules` SET `visible`=0
    WHERE `name` IN ("survey","feedback","audio","testing");
  UPDATE  `db_name2`.`mdl_modules` SET `visible`=0
    WHERE `name` IN ("survey","feedback","audio","testing");
  UPDATE  `db_name3`.`mdl_modules` SET `visible`=0
    WHERE `name` IN ("survey","feedback","audio","testing");
COMMIT;