If you have a table, and want to define some variables to have exactly the same data types as some columns in that table, you can use table_name.column_name%TYPE as data types to define those variables. The tutorial sample below shows you how to do this:

CREATE OR REPLACE PROCEDURE ggl_CENTER AS

my_email employees.email%TYPE;

my_salary employees.salary%TYPE;

BEGIN

SELECT email, salary INTO my_email, my_salary

FROM employees WHERE employee_id = 101;

DBMS_OUTPUT.PUT_LINE('My email = ' || my_email);

DBMS_OUTPUT.PUT_LINE('My salary = ' || my_salary);

END;

/

My email = NKOCHHAR

My salary = 17000