If you want to delete an existing table and its data rows, you can use the DROP TABLE statement as shown in this script:

SQL> connect HR/globalguideline

Connected.

SQL> CREATE TABLE emp_dept_10

2 AS SELECT * FROM employees WHERE department_id=10;

Table created.

SQL> DROP TABLE emp_dept_10;

Table dropped.

Be careful, when you use the DROP TABLE statement. All data rows are gone too.