⟩ 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:
>.insqlplus /nolog
SQL> connect HR/globalguideline
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
2 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.
