How to create oracle view by a function?

by cortez.connelly , in category: MySQL , 19 days ago

How to create oracle view by a function?

Facebook Twitter LinkedIn Telegram Whatsapp

1 answer

Member

by domenico , 18 days ago

@cortez.connelly 

To create an Oracle view using a function, you can follow these steps:

  1. Create a function in Oracle that returns the data you want to display in the view. For example, you could create a function that retrieves employee information from the employees table.
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
CREATE OR REPLACE FUNCTION get_employee_info
RETURN SYS_REFCURSOR
AS
    emp_info SYS_REFCURSOR;
BEGIN
    OPEN emp_info FOR
        SELECT employee_id, first_name, last_name
        FROM employees;
    
    RETURN emp_info;
END;


  1. Create a view in Oracle that uses the function to retrieve the data. You can use the CREATE VIEW statement to create the view.
1
2
3
4
CREATE OR REPLACE VIEW employee_view
AS
SELECT *
FROM TABLE(get_employee_info());


  1. Now you can query the view to see the data returned by the function.
1
SELECT * FROM employee_view;


This will execute the function and display the data retrieved from the employees table in the view.


Please note that the function and view names used in this example are for illustration purposes only, and you should adapt them to match your specific requirements.