If you have sufficient privileges, you can execute a stored procedure from any supporting client utility or interface using the SQL CALL statement. You can also execute a stored procedure from an external stored procedure written in C, C++, or Java.
You have to specify arguments for all the parameters contained in the stored procedure.
Here is an example of a CALL statement to execute the procedure created in Creating Stored Procedures:
CALL NewProc ('Jonathan', 1066, 34, dname);