How To Create a New Table by Selecting Rows from Another Table
Q
How To Create a New Table by Selecting Rows from Another Table? - Oracle DBA FAQ - Understanding SQL DDL Statements
✍: FYIcenter.com
A
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 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.
2007-04-22, 5590👍, 0💬
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