How to write MySQL query in text file and run in linux

I would like to call a .sql file from a .sh file in linux. The .sql file will contain queries to MySQL database.

I am able to call the .sql file by running .sh file in linux, but the sql query is not working. Below is my syntax. The select statement is throwing below error.

./sample.sql: line 4: syntax error near unexpected token `from'

sample.sh file:

echo "this is shellscript calling sql"
./sample.sql

sample.sql file:

set pages 999
set lines 999
set colsep |
select * from sampletable;

expected result should be similar to a normal select * from xxx statement