Create a partition function. in .NET framework

Creator PDF417 in .NET framework Create a partition function.

Create a partition function.
Generating PDF-417 2d Barcode In .NET Framework
Using Barcode encoder for .NET framework Control to generate, create PDF417 image in Visual Studio .NET applications.
www.OnBarcode.com
Scanning PDF417 In .NET Framework
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Estimated lesson time: 20 minutes
Generating Bar Code In Visual Studio .NET
Using Barcode creation for VS .NET Control to generate, create barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Bar Code Recognizer In .NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
How to Create a Partition Function
Paint PDF-417 2d Barcode In Visual C#
Using Barcode generator for Visual Studio .NET Control to generate, create PDF-417 2d barcode image in VS .NET applications.
www.OnBarcode.com
PDF 417 Printer In .NET Framework
Using Barcode creator for ASP.NET Control to generate, create PDF417 image in ASP.NET applications.
www.OnBarcode.com
You use the CREATE PARTITION FUNCTION Transact-SQL command to create a partition function. The general syntax for this command is as follows:
Printing PDF417 In VB.NET
Using Barcode creation for Visual Studio .NET Control to generate, create PDF-417 2d barcode image in .NET framework applications.
www.OnBarcode.com
EAN / UCC - 14 Generation In .NET Framework
Using Barcode printer for VS .NET Control to generate, create GS1-128 image in .NET framework applications.
www.OnBarcode.com
CREATE PARTITION FUNCTION partition_function_name ( input_parameter_type ) AS RANGE [ LEFT | RIGHT ] FOR VALUES ( [ boundary_value [ ,...n ] ] ) [ ; ]
Make Data Matrix ECC200 In .NET Framework
Using Barcode printer for VS .NET Control to generate, create Data Matrix 2d barcode image in VS .NET applications.
www.OnBarcode.com
Generate Barcode In .NET
Using Barcode printer for Visual Studio .NET Control to generate, create barcode image in .NET framework applications.
www.OnBarcode.com
You first give the partition function a name that conforms to the rules for object identifiers. Then you must specify a data type for the input parameter. You can use any data type except text, ntext, varchar(max), image, xml, timestamp, nvarchar(max), varbinary(max), Transact-SQL user-defined data types (UDTs), and common language runtime (CLR) data types. Range partitioning is the only type of partitioning that SQL Server 2005 supports. In the command s RANGE clause, you specify a value of either RIGHT or LEFT to specify which partition a boundary point value belongs in. And in the VALUES clause, you specify the list of boundary points for the partition function. To explain how to use this command, let s look at the following example:
Printing Quick Response Code In Visual Studio .NET
Using Barcode drawer for .NET framework Control to generate, create QR image in .NET applications.
www.OnBarcode.com
Paint ISSN - 13 In .NET
Using Barcode encoder for Visual Studio .NET Control to generate, create ISSN image in .NET applications.
www.OnBarcode.com
CREATE PARTITION FUNCTION partfunc (int) AS RANGE LEFT FOR VALUES (1000, 2000, 3000, 4000, 5000);
UCC-128 Creator In Objective-C
Using Barcode generator for iPad Control to generate, create EAN128 image in iPad applications.
www.OnBarcode.com
Making Data Matrix ECC200 In None
Using Barcode maker for Software Control to generate, create ECC200 image in Software applications.
www.OnBarcode.com
This command creates a partition function named partfunc that is applied to values of data type integer. This means that you cannot apply the function to columns that
PDF-417 2d Barcode Creator In .NET
Using Barcode maker for Reporting Service Control to generate, create PDF 417 image in Reporting Service applications.
www.OnBarcode.com
Bar Code Scanner In Visual Studio .NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Lesson 1: Creating a Partition Function
Printing Code 39 Extended In None
Using Barcode creation for Word Control to generate, create USS Code 39 image in Word applications.
www.OnBarcode.com
Creating Barcode In C#.NET
Using Barcode generation for VS .NET Control to generate, create bar code image in .NET applications.
www.OnBarcode.com
either are not defined as an integer data type or are not implicitly converted to an integer data type. The RANGE LEFT clause in the example specifies that each boundary point defined for the function resides in the left-hand partition. The VALUES clause defines the boundary points for the partitions. A partition function always maps the entire range of allowed values without any holes, so every possible value is always defined to a specific partition. The partition function partfunc defines six partitions, as Table 6-1 shows.
UCC - 12 Creator In Java
Using Barcode generation for Android Control to generate, create Universal Product Code version A image in Android applications.
www.OnBarcode.com
Paint GS1 DataBar Truncated In Java
Using Barcode creation for Java Control to generate, create GS1 DataBar image in Java applications.
www.OnBarcode.com
Table 6-1
Partition Function partfunc s Six Partitions
Partition ID 1 2 3 4 5 6
Range of Values infinity to 1,000 1,001 to 2,000 2,001 to 3,000 3,001 to 4,000 4,001 to 5,000 5,001 to +infinity
If you defined the partition function as RANGE RIGHT instead of RANGE LEFT, the values would map as shown in Table 6-2.
Table 6-2
Partition Values If Partition Function Were Defined as RANGE RIGHT
Partition ID 1 2 3 4 5 6
Range of Values infinity to 999 1,000 to 1,999 2,000 to 2,999 3,000 to 3,999 4,000 to 4,999 5,000 to +infinity
6
Creating Partitions
Note that a partition function does not do the following:
Specify a table, index, or indexed view Specify a filegroup Reference physical data of any kind
The partition scheme and table or index creation statement uses a stand-alone database object to implement partitioning.
Quick Check
1. What does the RANGE clause of the CREATE PARTITION FUNCTION command define 2. What does the VALUES clause of the CREATE PARTITION FUNCTION command define
Quick Check Answers
1. The RANGE clause specifies the partition that boundary values belong to. 2. The VALUES clause defines the boundary points for the partition function.
PRACTICE
Create a Partition Function
In this practice, you will create a partition function to use in subsequent practices. To simplify this, we use a test database. 1. Launch SSMS, connect to your instance, and open a new query window. 2. If you have not already created a directory called C:\test, create it now. 3. Create a new database called partitiontest by using the following script:
USE master GO CREATE DATABASE partitiontest ON PRIMARY ( NAME = db_dat, FILENAME = 'c:\test\db.mdf', SIZE = 2MB), FILEGROUP FG1 ( NAME = FG1_dat, FILENAME = 'c:\test\FG1.ndf', SIZE = 2MB), FILEGROUP FG2 ( NAME = FG2_dat, FILENAME = 'c:\test\FG2.ndf', SIZE = 2MB),
Lesson 1: Creating a Partition Function
FILEGROUP FG3 ( NAME = FG3_dat, FILENAME = 'c:\test\FG3.ndf', SIZE = 2MB), FILEGROUP FG4 ( NAME = FG4_dat, FILENAME = 'c:\test\FG4.ndf', SIZE = 2MB) LOG ON ( NAME = db_log, FILENAME = 'c:\test\log.ndf', SIZE = 2MB, FILEGROWTH = 10% ); GO USE partitiontest GO
4. Create a partition function by using the following command:
Copyright © OnBarcode.com . All rights reserved.