SQL to add column and comment in table in single command

Question

I am using Oracle 11g for my web application. I want to add a column and a comment to an existing table. I can do that easily with the below commands

ALTER TABLE         


        

Answer 1

Add comments for two different columns of the EMPLOYEE table :

COMMENT ON EMPLOYEE
     (WORKDEPT IS 'see DEPARTMENT table for names',
     EDLEVEL IS 'highest grade level passed in school' )