Solve MySQL error 1064 (42000)

After adding the statement to login to mysql in the shell, the error is reported as follows
ERROR 1064 (42000) at line 2: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ‘exit’ at line 1
After checking, the two back quotes are missing, which is perfectly solved by adding them to the last executed statement

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