How to use a Temporary View In SQL
Now, if there is a case arises where we are unable to directly drop the view, then we can create a temporary view with the our desired column name . After that, we can drop the original view and then rename our temporary view to the name of our original view.
Here’s an example depicting the use of Temporary View:
-- Create a temporary view
CREATE VIEW temp_view AS
SELECT prod_code AS id,
prod_name,
prod_price
FROM products_data;
-- Drop the original view
DROP VIEW sales_view;
-- Rename the temporary view to the original view name
RENAME temp_view TO sales_view;
SELECT * FROM sales_view;
Output:
|
id |
prod_name |
prod_price |
|---|---|---|
|
101 |
Laptop |
50.00 |
|
102 |
TV |
75.00 |
|
103 |
Smartphone |
100.00 |
Here, view named “temp_view” is created with the new name of column named ‘prod_code’ as “id” . After that original “sales_view” is dropped, and then “temp_view” is changed to “sales_view”. Content of updated “sales_view” is being displayed.
How to Rename a Column in View in PL/SQL?
Renaming a column in a view can be a challenging task in PL/SQL, as the language does not provide a direct command for this operation. However, there are several effective methods to achieve this goal without compromising data integrity or the structure of the view.
In This article, we will explore three key approaches for recreating the view, using the ALTER VIEW statement, and using a temporary view. Through detailed examples and explanations for learn how to rename a column in a view in PL/SQL efficiently and effectively.