How we can execute the sql file from command prompt

How we can execute the sql file

Q :-How we can execute the sql file ?
Ans :- Below are the different ways to execute the sql file

1) @
Example :-
SQL>@C:\Users\emp.sql

2) @@
Example :-
SQL>@@C:\Users\emp.sql

3) run
Example :-
SQL>run C:\Users\emp.sql

4) start
Example :-
SQL>start C:\Users\emp.sql