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Can we modify table using view?
If the view contains joins between multiple tables, you can only insert and update one table in the view, and you can’t delete rows. You can’t directly modify data in views based on union queries. You can’t modify data in views that use GROUP BY or DISTINCT statements.
What does alter view do?
The ALTER VIEW command allows you to modify a view. A view is based on the result set from a query consisting of a SELECT statement or a UNION of two or more SELECT statements. To determine if a specified view exists in the current namespace, use the $SYSTEM. SQL.
What are restrictions on Alter command?
– Column can’t be deleted with alter command. – Column can’t be renamed a column. – Column can’t be added in between of the existing columns.
Can I alter a view?
You can also use ALTER VIEW to define, modify, or drop view constraints. This statement does not change the definition of an existing view. To redefine a view, you must use CREATE VIEW with the OR REPLACE keywords.
Can we rename primary key column in SQL?
In SQL Server, you can use the sp_rename stored procedure to rename a user created object in the current database, including a primary key. Fortunately, sp_rename provides a quick and easy way to change this name. …
When do I need to use alter view?
You may want to recompile a view explicitly after altering one of its base tables to ensure that the alteration does not affect the view or other objects that depend on it. You can also use ALTER VIEW to define, modify, or drop view constraints. This statement does not change the definition of an existing view.
How do I alter a view in SQL Server?
To execute ALTER VIEW, at a minimum, ALTER permission on OBJECT is required. Using SQL Server Management Studio To modify a view. In Object Explorer, click the plus sign next to the database where your view is located and then click the plus sign next to the Views folder. Right-click on the view you wish to modify and select Design.
How is alter view encrypted in SQL Server?
Encrypts the entries in sys.syscomments that contain the text of the ALTER VIEW statement. WITH ENCRYPTION prevents the view from being published as part of SQL Server replication. Binds the view to the schema of the underlying table or tables.
When to use schemabinding to alter a view?
The view definition itself must first be modified or dropped to remove dependencies on the table to be modified. When you use SCHEMABINDING, the select_statement must include the two-part names ( schema.object) of tables, views, or user-defined functions that are referenced. All referenced objects must be in the same database.