in sql server 2008

Database Knowledge Points:First, the calculated field1 NULL 's name into "anonymous";Expression: Nullif (expression1, expression2)Meaning: If two expressions are not equivalent, NULLIF returns the value of the first expression1.If two expressions

In SQL Server 2008, in order to protect the security of the database, the need for different users to open different access user, then how to simply control the user's permissions? Below we will create a read-only user, for everyone to learn to use.

SQL Server SP2 brings us the vardecimal feature, which allows the originally fixed-length decimal data to be stored in a variable-length format in the data file, which is said to save 30% of the space for a typical data warehouse, while SQL Server 20

SQL Server Technical Articles Author: Graeme Malcolm (Content Supervisor) Technical review: Dragan Tomic and Michael Rys Project Editor: Joanne Hodgins Release Date: August 2008 Applicable products: SQL Server 2008 Summary: Microsoft®sql

1 Introduction Microsoft has introduced XML-related features and Transact-SQL keyword FOR XML and OPENXML in Microsoft SQL Server 2000. This allows developers to write Transact-SQL code to obtain query results in the form of XML streams and to

Everyone is waiting for the new features of Microsoft SQL Server 2008 to appear, but we should first know what is not recommended (deprecated) and unsupported (discontinued) features. The "Not recommended" feature refers to features that appear in

SQL Server 2008 finally released the new version, although it was just another community beta rather than a full version. Whenever new software is released, the most problematic question to ask most is: What are some of the new features? SQL Server 2

the system query process for SQL Server is responsible for generating a query execution plan when the select query executes. SQL Server will "intelligently" choose an efficient plan to replace the inefficient one. Most of the time, SQL Server will

It is obviously unsafe to use the superuser sa everywhere, so there is a need to create a user and make it accessible to only one database. Of course, you can use the SQL Server's own graphical Interface wizard, but it's too hard to use! Sometimes

Atitit. Trouble Shooting ---  A critical error has occurred with the current command. You should discard any results that might result from SQL Server1. Phenomenon 12. Reason :: SQL Server bug or limit , query when using too much resources than the

PowerShell was integrated early in SQL Server 2005, and I used it for the first time in SQL Server 2008. Today is free to summarize a few practical examples out. Welcome this expert to refine: First, do not SqlServerCmdletSnapin100 this snapin to

Introduction In the past 20 years, databases have been widely used and developed rapidly. The reduction in storage and technology costs has resulted in massive storage of data and a dramatic expansion of the database. Because of this simple and

In a database in SQL Server 2005 or earlier, a table variable is not a parameter to a stored procedure. When multiple rows of data to SQL Server need to send multiple rows of data to SQL Server, developers either send a list of records each time, or

SELECTCreation_time N'Statement Compilation Time', Last_execution_time N'Last Execution Time', Total_physical_reads N'total number of physical reads', Total_logical_reads/Execution_count N'each logical read Count', Total_logical_reads N'total number

; with Tran_locks as (Select Resource_type,db_name (resource_database_id) as Db_name,resource_description, object_name (resource_associated_entity_id,resource_database_id) as Object_name,request_mode,request_type,

Encryption in SQL Server is handled in a hierarchical form to provide multiple levels of security. SQL Server contains two key types that are used to encrypt data. Such as:1. Server Master Secret (Service master key), located at the top of the

Create a table:1 CREATE TABLE [testtable] (2 [ID] [int] IDENTITY(1,1) not NULL ,3 [FirstName] [nvarchar]( -) COLLATE Chinese_prc_ci_asNULL ,4 [LastName] [nvarchar]( -) COLLATE Chinese_prc_ci_asNULL ,5 [Country] [nvarchar]( -) COLLATE Chinese_prc_

Starting with SQL SERVER 2008, we are no longer able to use the previousDUMP TRAN database name with NO_LOGThis way to shrink the database, however, you can use another alternative method, the SQL statement is as follows:ALTER database name set

Nine common data mining algorithms are provided in SQL Server. These algorithms are used in different data mining application scenarios. Next we will analyze and discuss each algorithm one by one. 1. Decision Tree Algorithm A decision tree, also

The Apply operator can implement a combined result of two query results, also known as a cross collection. For example two data combinations (a,b), (A,b), their cross collection for (Aa,ab,aa,ab). Apply is divided into cross apply and outer apply