How To Create a New Table by Selecting Rows from Another Table?

Let's say you have a table with many data rows, now you want to create a backup copy of this
table of all rows or a subset of them, you can use the CREATE TABLE...AS SELECT statement to
do this. Here is an example script:
>.\bin\sqlplus /nolog
SQL> connect HR/fyicenter
Connected.
SQL> CREATE TABLE emp_dept_10
2 AS SELECT * FROM employees WHERE department_id=10;
Table created.
SQL> SELECT first_name, last_name, salary FROM emp_dept_10;
FIRST_NAME LAST_NAME SALARY
-------------------- ------------------------- ----------
Jennifer Whalen 4400
As you can see, this SQL scripts created a table called "emp_dept_10" using the same column
definitions as the "employees" table and copied data rows of one department.
This is really a quick and easy way to create a table.