Several ways to recover data in SQL Server:
1. The nature is Backup recovery method Backup This is the safest and most reliable way to operate, as long as you select Restore in SQL Server's Enterprise Manager.
You can also do this with
Using declareThe following example uses a local variable named @find to retrieve all the author information that begins with the ring of the last name.Copy code code as follows:Use pubsDECLARE @find varchar (30)Set @find = ' ring% 'Select
A local variable is identified with a @ identifier, with a global variable of two @ (commonly used global variables are generally defined);
Declare local variable syntax: DECLARE @ variable name data type; For example: declare @num int;
Assignment:
DescriptionQuery () method (XML data type)This method is used to query the XML instance.Value () method (XML data type)This method is used to retrieve the value of the SQL type from an XML instance.exist () method (XML data type)This method is used
At present, the management information system has shifted from the traditional client/server (c/s) mode to the browser/server (b/s) mode, especially after Microsoft introduced its new product ASP language, this change is more rapid. Management
1, what is view?
2, why to use the view;
3, the order by in the view;
4, refresh the view;
5, update the view;
6, view options;
7, indexed view;
1. What is a view
A view is a virtual table defined by a query that differs from a physical
Original address: http://www.sqlpassion.at/archive/2014/04/08/improving-query-performance-by-using-correct-search-arguments/
Today's article gives you a talk about a specific performance issue with indexing on SQL Server.
Problem
Look at the
SQL Server 2000 Injection Protection Encyclopedia (i)
SQL injection early from ' or ' 1 ' = ' 1
Most important table name:
SELECT * from sysobjects
sysobjects ncsysobjects
sysindexes
Many need to use the SQL2005 program, there are a lot of novice or will operate, here to write a detailed picture and text tutorials to send a rookie, master please drift. For a friend using a stand-alone host, if you have not yet installed, follow
SQL Server provides a wealth of system stored procedures to help us manage our databases and develop them. Share today introduction Some common database extended stored procedures
xp_cmdshell
This is familiar to everyone, and you can use
Technical preparationBased on SQL Server2008R2, Microsoft uses a simpler case Library (Northwind) for parsing.IntroductionThe so-called index application is in our daily write T-SQL statement, how to use the existing index, then analysis is what we
Example 1. Used for paging of common data The code is as follows:Copy code Create procedure [dbo]. [Pub_DataPager]@ PTableName nvarchar (1000), -- table name@ PFieldNames nvarchar (max), -- string to be queried, separated by ",", or '*'@ PWhere
In the help of SQL server2008, there is an example of WAITFOR Delay, which is incorrect !!! USE AdventureWorks;GOIF OBJECT_ID ('dbo. TimeDelay_hh_mm_ss ', 'P') IS NOT NULLDrop procedure dbo. TimeDelay_hh_mm_ss;GOCreate procedure dbo. TimeDelay_hh_mm_
How to manually clear logsI. Here we will describe in detail how to use the Enterprise Manager to clear SQL 2000 logs:1. Open the Enterprise Manager, right-click the database to be processed, choose Properties> Options> fault recovery, and choose
// It is inconvenient to process dates in PHP, for example, to find the month with a different date? What should I do?// File name: date. inc. php3// Before using these two functions, convert the date or date to the timestamp type.// For example:// $
When I first used SQL Server 2005, I did not know how to save it after I modified the stored procedure.In Progammability of SQL Server Management Studio, I find the corresponding stored procedure. Right-click and select "Modify". The editing window
Required Tools: SQL Query Analyzer and SqlExec Sunx VersionPart 1:Summary on how to remove xp_cmdshell to protect the system:First, let's know the statement:1. To remove the xp_cmdshell extension process, use the following statement:If exists
The SQL server memory has two basic management methods: dynamic allocation and static allocation.The amount of memory that can be used by the control program. Dynamic allocation allows the administrator to declare the size of a piece of memory.
Q: What should I do if the configuration of Tempdb In Ram is incorrect?A: SQL Server provides a mechanism to store Tempdb in memory to improve system efficiency. However, if you set the value of "Tempdb In Ram"SQL Server cannot be started normally.
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