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Partitioned views and partitioned tables have several signi cant differences. Data De nition Language (DDL) differences and the need to manage more objects with partitioned views are obvious all participating tables must have coordinated constraints and primary keys. Less obvious is the fact that all partitions of a partitioned table must reside in the same database, while in the case of partitioned views the participating tables may reside not only in different databases but also on different servers and on separate machines. Probably the least-known discrepancies are in query compilation, optimization, and execution. During query compilation and optimization, each branch of a partitioned view is processed separately. This is required because the tables may reside in different databases and they may have different statistics and indexes. Therefore, each branch may have a different query plan as well. While this may be advantageous in some cases, in most cases the compilation cost is too high, especially when the number of partitions is large. A partitioned view with dozens of partitions takes signi cantly longer to compile and optimize compared to similar partitioned tables. When SQL Server is compiling a query with a partitioned table, SQL Server knows the table is partitioned and that each partition has exactly the same attributes, including indexes and statistics, as the rest of the partitions. Therefore, the compilation is performed only once, and the same plan is used for all partitions of the table. Partitioned tables and indexes are supported only in the SQL Server Enterprise and Developer editions. Partitioned views are available in all editions. The rest of this chapter concerns partitioned tables and indexes.

internal sealed class SomeType { private static Int32 s_x = 5; static SomeType() { s_x = 10; } }

Once you phrase the request in a negative way, the translation to SQL is intuitive using correlated subqueries: SELECT * FROM dboCustomers AS C WHERE NOT EXISTS (SELECT * FROM dboEmployees AS E WHERE Country = N'USA' AND NOT EXISTS (SELECT * FROM dboOrders AS O WHERE OCustomerID = CCustomerID AND OEmployeeID = EEmployeeID));.

7

USE tempdb; IF OBJECT_ID('dbo.V1', 'V') IS NOT NULL DROP VIEW dbo.V1; IF OBJECT_ID('dbo.T1', 'U') IS NOT NULL DROP TABLE dbo.T1;

BoundField field = new BoundField(); field.DataField = companyname"; field.HeaderText = Company Name"; grid.ColumnFields.Add(field);

If you re having trouble dragging a gadget, place your mouse just to the right of the gadget s upper right corner . A small panel of three controls will appear . The top control closes the gadget, the middle one opens the gadget s options dialog box, and the bottom one provides a handle by means of which you can drag .

You can now easily access this content from any control in your application as follows:

Click New and then click Finish when the task has completed. As with all other commands in the Exchange Management Console, you can save the Windows PowerShell script that was executed to complete the command on the Completion page before you close the wizard. Click New E-mail Address Policy in the Actions pane to open the New E-mail Address Policy Wizard shown in Figure 18-20.

There are a few changes in relation to the table that represents the chart basis . It s rather marginal that the column headers in cells M11 and N11 are different . However, the formulas used for these are the same as those from variant 1 (see Figure 7-18) .

ActionLink BeginForm CheckBox DropDownList Editor Hidden Label ListBox Password RadioButton RenderAction

C ha p ter 3 r U B Y S B U ILDI NG B LO C K S : D a t a , e X p r e S S I O N S , a N D F LO W C O N t r O L

Separating system and program files from personal data makes it easier to upgrade to a new version of the operating system (or a different operating system).

Movies don t always need to move. Sometimes a moment of frozen action is just what s needed. Still images enable you to create interesting narrated slide shows. They can be handy as stationary backgrounds for overlaid titles. (For more about laying titles over clips, see Creating Titles and Credits, later in this chapter.) Still image clips have a default duration of five seconds. You can increase or decrease this duration for a particular clip by dragging its trim handle on the timeline. To change the default duration, choose Tools, Options, click the Advanced tab, and enter a new value in the Picture Duration box. Note that changing the default does not affect pictures you ve already added to your project.