SELECT * FROM `campusvirtual`.`mdl_user` WHERE `mdl_user`.`username` STRING("jsolorzano","ksuarez");
SELECT * FROM `campusvirtual`.`mdl_user` WHERE `mdl_user`.`username` IN ('jsolorzano','ksuarez');
TRUNCATE `campusvirtual`.`mdl_user` WHERE `mdl_user`.`username` IN ('jsolorzano','ksuarez');
DELETE FROM `campusvirtual`.`mdl_user` WHERE `mdl_user`.`username` IN ('jsolorzano','ksuarez');