Updating views in sql server arthur rogers dating yahoo personals

11-Oct-2019 01:40

A view is really nothing more than a logical representation of one or more tables in a database.View offer the following benefits and functionality.The SQL Server (Transact-SQL) UPDATE statement is used to update existing records in a table in a SQL Server database.There are 3 syntaxes for the UPDATE statement depending on whether you are performing a traditional update or updating one table with data from another table.Note that for each scenario that we did not need to join any tables. Table is of the frequently used objects in any database.The example below shows all of the code from the view.You could also do a SELECT *, or further restrict the columns you want to see.

You can think of a view as a lens looking at one or more tables.

USE tempdb GO --DROP TABLE [dbo].[tbl_Student] --GO CREATE TABLE [dbo].[tbl_Student]( [Sno] [int] NOT NULL, [Student ID] nvarchar(6) NOT NULL , [Student name] [varchar](50) NOT NULL ) Insert into dbo.[tbl_Student] VALUES (1,'STD001','Bob') Insert into dbo.[tbl_Student] VALUES (2,'STD002','Alexander') GO SELECT * FROM [tbl_Student] GO --OUTPUT Step 2 : Once you created a table, lets create a view on top of it. Please make a note that it is not recommended to create view using “*“.

It must be with the proper column name of the table. If you look at the above result set you can observe that whatever changes you made in the table, did not reflect in the view. Here it comes to sp_refreshview (A system level stored procedure), which refreshes the metadata of any view once you edit the schema of the table.

You can also add additional row restriction to the view as we have done.

IF ( OBJECT_ID('dbo.vw_occupied_seats_by_class') IS NOT NULL ) DROP VIEW dbo.vw_occupied_seats_by_class GO CREATE VIEW dbo.vw_occupied_seats_by_class AS SELECT a.course_designater_fk , b.seat_num , (c.firstname ' ' c.lastname) as "Student" FROM dbo. Class Registration b ON a.classes_num = b.classes_num JOIN dbo.However, we should be very careful while customizing a table because sometimes other objects are dependable on a table and can give consistency issues as well.