C h a p t e r 8 : S p e c i a l Ty p e s o f P r o c e d u r e s in .NET

Encoder Data Matrix 2d barcode in .NET C h a p t e r 8 : S p e c i a l Ty p e s o f P r o c e d u r e s

C h a p t e r 8 : S p e c i a l Ty p e s o f P r o c e d u r e s
Data Matrix Reader In VS .NET
Using Barcode Control SDK for Visual Studio .NET Control to generate, create, read, scan barcode image in VS .NET applications.
ECC200 Generation In .NET Framework
Using Barcode creation for VS .NET Control to generate, create DataMatrix image in .NET framework applications.
If Update (Lease) or Update(LeaseScheduleId) begin -- subtract deleted leases from total amount Update LeaseSchedule Set LeaseSchedule.PeriodicTotalAmount = LeaseSchedule.PeriodicTotalAmount - Coalesce(d.Lease, 0) From LeaseSchedule inner join deleted d On LeaseSchedule.ScheduleId = d.LeaseScheduleId -- add inserted leases to total amount Update LeaseSchedule Set LeaseSchedule.PeriodicTotalAmount = LeaseSchedule.PeriodicTotalAmount + Coalesce(i.Lease, 0) From LeaseSchedule inner join inserted i On LeaseSchedule.ScheduleId = i.LeaseScheduleId End Go
ECC200 Recognizer In .NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in VS .NET applications.
Bar Code Printer In Visual Studio .NET
Using Barcode creation for .NET Control to generate, create bar code image in VS .NET applications.
Views
Barcode Reader In VS .NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in VS .NET applications.
Painting DataMatrix In C#
Using Barcode printer for .NET framework Control to generate, create Data Matrix 2d barcode image in Visual Studio .NET applications.
Views are database objects that behave like stored queries or virtual tables. There are several types of views, and they differ in internal design and purpose: Standard SQL views Dynamic views INFORMATION_SCHEMA views Indexed views Partitioned views
Creating DataMatrix In VS .NET
Using Barcode drawer for ASP.NET Control to generate, create Data Matrix ECC200 image in ASP.NET applications.
Data Matrix Drawer In Visual Basic .NET
Using Barcode creator for .NET Control to generate, create Data Matrix image in VS .NET applications.
Design of Standard SQL Views
Printing Code 39 Extended In .NET Framework
Using Barcode creator for Visual Studio .NET Control to generate, create USS Code 39 image in .NET applications.
Encode EAN128 In VS .NET
Using Barcode maker for VS .NET Control to generate, create GS1 128 image in Visual Studio .NET applications.
In their basic form, views are designed simply as queries enclosed inside a Create View statement:
Generating GTIN - 13 In VS .NET
Using Barcode creator for VS .NET Control to generate, create UPC - 13 image in .NET applications.
ISSN Generator In .NET Framework
Using Barcode generation for .NET Control to generate, create ISSN image in VS .NET applications.
CREATE VIEW dbo.vInventory AS SELECT dbo.Inventory.Inventoryid, dbo.Equipment.Make, dbo.Equipment.Model,
GTIN - 13 Creation In Java
Using Barcode generator for Java Control to generate, create EAN / UCC - 13 image in Java applications.
UCC - 12 Generation In Visual Studio .NET
Using Barcode creator for Reporting Service Control to generate, create UCC-128 image in Reporting Service applications.
SQL Server 2000 Stored Procedure & XML Programming
Drawing Bar Code In None
Using Barcode generator for Excel Control to generate, create barcode image in Microsoft Excel applications.
Barcode Creation In None
Using Barcode creator for Online Control to generate, create bar code image in Online applications.
dbo.Location.Location, dbo.Status.Status, dbo.Contact.FirstName, dbo.Contact.LastName, dbo.Inventory.Cost, dbo.AcquisitionType.AcquisitionType, dbo.Location.Address, dbo.Location.City, dbo.Location.ProvinceId, dbo.Location.Country, dbo.EqType.EqType, dbo.Contact.Phone, dbo.Contact.Fax, dbo.Contact.Email, dbo.Contact.UserName, dbo.Inventory.Rent, dbo.Inventory.EquipmentId, dbo.Inventory.LocationId, dbo.Inventory.StatusId, dbo.Inventory.OwnerId, dbo.Inventory.AcquisitionTypeID, dbo.Contact.OrgUnitId FROM dbo.EqType RIGHT OUTER JOIN dbo.Equipment ON dbo.EqType.EqTypeId = dbo.Equipment.EqTypeId RIGHT OUTER JOIN dbo.Inventory INNER JOIN dbo.Status ON dbo.Inventory.StatusId = dbo.Status.StatusId LEFT OUTER JOIN dbo.AcquisitionType ON dbo.Inventory.AcquisitionTypeID = dbo.AcquisitionType.AcquisitionTypeId ON dbo.Equipment.EquipmentId = dbo.Inventory.EquipmentId LEFT OUTER JOIN dbo.Location ON dbo.Inventory.LocationId = dbo.Location.LocationId LEFT OUTER JOIN dbo.Contact ON dbo.Inventory.OwnerId = dbo.Contact.ContactId
Data Matrix Generator In None
Using Barcode creation for Online Control to generate, create Data Matrix 2d barcode image in Online applications.
UPC-A Supplement 5 Printer In VB.NET
Using Barcode generation for .NET Control to generate, create UPC-A image in .NET applications.
After a view is created, it can be used in the same way as any other table:
Decode Data Matrix In VB.NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in .NET applications.
Code 39 Encoder In Objective-C
Using Barcode encoder for iPad Control to generate, create Code 39 Full ASCII image in iPad applications.
SELECT dbo.vInventory.EquipmentId, dbo.vInventory.Make, dbo.vInventory.Model, dbo.vInventory.Status FROM dbo.vInventory WHERE LocationId = 2
Although data is accessible through a view, it is not stored in the database inside a view. When the view is referenced in a query, SQL Server simply processes the Select statement behind the view and combines the data with the rest of the query:
EquipmentId Make Model Status ---------------------------------------------------------1 Toshiba Portege 7020CT Active 6 NEC V90 Ordered 5 Bang & Olafson V4000 Active 1 Toshiba Portege 7020CT Active 34 Toshiba Portege 7030CT Active (5 row(s) affected)
A view is often created on a query that joins many tables and contains aggregate functions:
C h a p t e r 8 : S p e c i a l Ty p e s o f P r o c e d u r e s
Create View vInventoryCost WITH SCHEMABINDING as select ET.EqType, e.Make, e.Model, Sum(Cost) TotalCost, Count(*) [Count] from dbo.Inventory I inner join dbo.Equipment e on i.EquipmentId = e.EquipmentId inner join dbo.EqType ET on e.EqTypeId = ET.EqTypeId where Cost is not null group by ET.EqType, e.Make, e.Model
Syntax
Views can be created and edited by simply executing Create View and Alter View statements:
{CREATE}|{ALTER} VIEW view_name [ ( column [ ,...n ] ) ] [ WITH < view_option > [ ,...n ] ] AS select_statement [ WITH CHECK OPTION ]
It is not necessary to specify column names in the header of the view. The view just transfers column names from the Select statement if they are uniquely identified. You just need to make sure that column names are not repeated and that all computed columns also have names assigned (for example, you can add aliases to computed columns). As with stored procedures and functions, views can be encrypted so that nobody can see their source code. You just need to create or alter it using the With Encryption view option. The With Schemabinding option allows you to schema-bind a view to database objects (such as tables, views, and user-defined functions) that it references. Once the function is schema-bound, it is not possible to make schema changes on the underlying objects. All attempts to drop the objects and all attempts to alter underlying objects (which would change the object schema) will fail. When this option is used, all objects inside the view must be referenced using two-part names (owner.dbobject). The View_Metadata option specifies that SQL Server will return information about the view s columns (not base table columns) to client-side APIs. This feature might be useful for making views with triggers that are updateable.
Copyright © OnBarcode.com . All rights reserved.