How to create stored procedure in postgresql?

1) Create Procedure

CREATE OR REPLACE PROCEDURE pgProcedure ()
as $$
BEGIN
SELECT
LastName
from persons;

END;
$$ LANGUAGE plpgsql;

2) Create Procedure with paramenter

CREATE OR REPLACE PROCEDURE pgProcedure (PersonID int )
as $$
BEGIN
SELECT
LastName
from persons where PersonID!=10;

END;
$$ LANGUAGE plpgsql;

3) Raise Notice rather than DBMS_OUTPUT.PUT_LINE

CREATE OR REPLACE PROCEDURE pgProcedure (PersonID int )
as $$
BEGIN
RAISE NOTICE ‘Messaage%’,PersonID;
SELECT
LastName
from persons where PersonID!=10;

END;
$$ LANGUAGE plpgsql;