However, if you try to query the SQL VIEW after the table has been dropped, you will receive a message indicating that the SQL VIEW has errors.
- 1 on 1 webcam privte sex chat
- dating relationship in the workplace
- a serial shares guide to internet dating
- Free online chatt dirty whores
- Cam chat free no sex signup web
- stine bramsen anders sg dating
- jappanese dating customs
The returning clause retrieves the rows affected by a DML statement.
You can specify this clause for tables and materialized views and for views with a single base table.
For example, a view can be used for the following purposes: Is the name to be used for a column in a view.
A column name is required only when a column is derived from an arithmetic expression, a function, or a constant; when two or more columns may otherwise have the same name, typically because of a join; or when a column in a view is specified a name different from that of the column from which it is derived.
Unlike ordinary base tables in a relational database, a view does not form part of the physical schema: as a result set, it is a virtual table computed or collated dynamically from data in the database when access to that view is requested.
Changes applied to the data in a relevant underlying table are reflected in the data shown in subsequent invocations of the view.
For example, if permissions are granted on the Sales Order ID column in a CREATE VIEW statement, an ALTER VIEW statement can name the Sales Order ID column with a different column name, such as Order Ref, and still have the permissions associated with the view using Sales Order ID. The statement can use more than one table and other views.
Appropriate permissions are required to select from the objects referenced in the SELECT clause of the view that is created.
You can use a database link to update a remote object only if you are using Oracle Database distributed functionality.