Delete view sql

In Object Explorer, expand the database that contains the view you want to delete , and then expand the Views folder. Right-click the view you want to delete and click Delete. In the Delete Object dialog box, click OK.

A view is a result set of a stored query on the data. It is only a virtual table. A view contains rows and columns, just like a real table.

The fields in a view are fields from one or more real tables in the database. Mit diesem Befehl werden Datenzeilen aus einer Tabelle gelöscht. The view referenced by table_or_ view _name must be updatable and reference exactly one base table in the FROM clause of the view definition. I wanted a script to drop schema bound views in the correct dependency order, and I wanted it to run on sql azure where sys. So I wrote this recursive query that.

How to delete a column from a view - Stack. If the underlying tables or views have changed since the view was originally create it may be useful to drop and re-create the view. For more information about determining dependencies for a specific view , see sys.

A view can contain all rows of a table or select rows from a table. In this syntax, the views are separated by commas. We will use the sales.

Diese Erweiterung, die einen Join angibt, kann anstelle einer Unterabfrage in der WHERE-Klausel verwendet werden, um zu entfernende Zeilen zu identifizieren. CREATE VIEW tutorial for the demonstration. This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are.

Diesen Query kann man nicht rückgängig machen, wenn alle Einträge gelöscht wurden hilft nur noch ein vorher erstelltes Backup. DELETE FROM tabellen_name. Nun wollen wir aus der Tabelle users den Benutzer mit Namen „Ginko5“ löschen. Allgemein ließe sich sagen, dass eine Tabelle über einen Satz von Definitionen verfügt und Daten physikalisch abspeichert. Drop view if exists dbo.

This would ultimately delete a row from the base table CUSTOMERS and the same would reflect in the view itself. Now, try to query the base table and the SELECT statement would produce the following result. How would I go about checking if the View exists?

EDIT: The DBMS being used is. In some cases, the SQL View may have some changes. But as we use the View in a lot of SQL queries we just need to update the SQL View content like fields or conditions. We can use Create Or Replace View statement.

This statement will update the SQL View if it exists, if not the SQL View will be created from scratch. Can You Delete Data from a View ? A collection of FAQs on SQL Server database views. Clear are provided with tutorial exercises on creating and dropping.

Insert, Update and Delete SQL Views You can use the OR Replace option. If the view exists it will be replaced with the new definition or a new view will be created. The AND condition allows you to delete a record if all of the conditions are met.

The OR condition deletes a record if any one of the conditions are met. SQL Views , Create Views, DROP Views - SQL Tutorial for Beginners SQL tutorial for Beginners in Hindi and English. Mit Views wird die stark differenzierte Struktur eines Auswahlbefehls vereinfacht.

Weiterhin können Views genutzt werden, um den Zugriff auf bestimmte Daten einzuschränken. Edit: This does work on SQL Server, and it doesn't require you joining to sys. Nutzer können Zugriff nur auf bestimmte.