MariaDB [(none)]> @?test.sql

    -> ;

ERROR 1064 (42000): 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 '@?test.sql' at line 1

MariaDB [(none)]> @@?test.sql

    -> ;

ERROR 1064 (42000): 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 '@@?test.sql' at line 1

MariaDB [(none)]> @test.sql

    -> ;

ERROR 1064 (42000): 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 '@test.sql' at line 1