How do I drop a view in Oracle?

How do I drop a view in Oracle?

Use the DROP VIEW statement to remove a view or an object view from the database. You can change the definition of a view by dropping and re-creating it. The view must be in your own schema or you must have the DROP ANY VIEW system privilege. Specify the schema containing the view.

How do you force a drop view?

To remove a view from the database, you use the following DROP VIEW statement:

1. DROP VIEW schema_name.view_name [CASCADE CONSTRAINT];
2. CREATE VIEW salesman AS SELECT * FROM employees WHERE job_title = ‘Sales Representative’;
3. SELECT * FROM salesman;

How do you drop a view from a database?

When you drop a view, the definition of the view and other information about the view is deleted from the system catalog. All permissions for the view are also deleted. Any view on a table that is dropped by using DROP TABLE must be dropped explicitly by using DROP VIEW.

Can we drop the view?

The syntax for the SQL DROP VIEW Statement is: DROP VIEW view_name; view_name. The name of the view that you wish to drop.

Which command is used to drop a view called v17?

Dropping a View in an database is not as scary as dropping a table or rows of data. Since a view is a virtual table, it is relatively easy to drop the view and begin again. The syntax is DROP VIEW followed by the table name: use the IF EXISTS command to make sure the system checks for the existence of the table.

Can we drop view in SQL?

SQL allows us to delete an existing View. We can delete or drop a View using the DROP statement. Syntax: DROP VIEW view_name; view_name: Name of the View which we want to delete.

What is the syntax for delete the view?

We can delete or drop a View using the DROP statement. Syntax: DROP VIEW view_name; view_name: Name of the View which we want to delete.

How do you check if a view already exists in SQL?

If you want to check the existing view for a particular schema in the same database, then use the following script.

1. USE[Codefari]
2. GO.
3. IF EXISTS (SELECT 1 FROM sys. views WHERE OBJECT_ID=OBJECT_ID(‘dbo.EmployeeView’))
4. BEGIN.
5. PRINT ‘View exists. ‘
6. END.
7. ELSE.
8. BEGIN.

Can You Drop a view in Oracle Database?

Oracle Database does not drop views, materialized views, and synonyms that refer to the view but marks them INVALID. You can drop them or redefine views and synonyms, or you can define other views in such a way that the invalid views and synonyms become valid again.

How to check if a drop table exists?

Sorry, there is no if exists in the Oracle’s drop table syntax. add an undocumented (and not implemented) hint /*+ IF EXISTS */ that will pleased you management. . declare table_does_not_exist exception; PRAGMA EXCEPTION_INIT (table_does_not_exist, -942); begin execute immediate ‘drop table continent /*+ IF EXISTS */’;

How to drop a table in SQL Server?

I have script where I want to first drop view and then create it. I know how to drop table: IF EXISTS (SELECT * FROM sys.views WHERE name = ‘view1’ AND type = ‘U’) DROP VIEW view1; create view1 as (……) ‘CREATE VIEW’ must be the first statement in a query batch. ‘CREATE VIEW’ must be the first statement in a query batch.

How to use drop view in Oracle 10grelease?

Oracle® Database SQL Reference 10gRelease 1 (10.1) Part Number B10759-01 Home Book List Contents Index Master Index Feedback Previous Next View PDF DROP VIEW Purpose Use the DROPVIEWstatement to remove a view or an object view from the database. You can change the definition of a view by dropping and re-creating it. See Also: