着重号：` `
SELECT * FROM `ORDER`;
mysql> SELECT * FROM `ORDER`; +----------+------------+ | order_id | order_name | +----------+------------+ | 1 | shkstart | | 2 | tomcat | | 3 | dubbo | +----------+------------+ 3 rows in set (0.00 sec)
MySQL8着重号 ` `
泰山崩于前而色不变，麋鹿兴于左而目不瞬，然后可以制利害，可以待敌。--心术