SQL> SQL> SQL> CREATE TABLE employee ( 2 id number, 3 name varchar(100), 4 birth_date date, 5 gender varchar2(30) ); Table created. SQL> SQL> SQL> INSERT INTO employee (id,name,birth_date,gender ) 2 SELECT 200,'Chris',NULL,'MALE' from DUAL; 1 row created. SQL> SQL> SQL> drop table employee; Table dropped.