SQL Server

Original:. Comparison of image type data in SQL ServerIn SQL Server, if you are comparing data for text, ntext, or image data types. You will be prompted:the text, ntext, and image data types cannot be compared or sorted unless the is NULL or Like

First of all, this SQL Server mechanism is actually very rigorous, his intention is to---if you do not log backup, you do not delete the log, and then there are scripts for you to reclaim the log space, it is very safe and convenient and

----------------------------------------------------------------------Select--------------------------------------------- -----------------------------------------------------------------------1. Query all the data in the table-----------select *

I. OverviewSQL Server provides backup and recovery methods for a variety of databases, such as detach/attach database, backup/restore database, copy database, and so on. This article introduces a commonly used "detach/Attach" method in learning,

Before encountered a small database corruption cannot open the problem, has not heeded, today production on the customer local small library generated such problems, has been repairedSqlCeEngine engine = new SqlCeEngine ("Data

ObjectiveLast three articles we describe how to view query plans, as well as some of the commonly used join operators, Union operators optimization techniques.In this paper, we analyze the parallel operation of SQL Server, as a multi-core computer

----Create an ODBC linkEXEC sp_addlinkedserver @server = ' mysql ', @srvproduct = ' mysql ', @provider = ' msdasql ', @provstr = ' Driver={mysql ODBC 5.1 Driver}; Server=localhost; Database=test; User=root; password=;

By default, the logged-on user sees themselves in addition to the database for which they have administrative privileges. You can also see other databases, which prompt for no permissions when you click Open. The following settings enable the user

Aggregation function: A function that summarizes multirow (row) data into a row according to certain rules, and before summarizing the data, you can group the data by a specific column (Coloumn) and then filter by the criteria given again.A: Count

SQL Server puts used data into the cache to speed up access to the data. If there are no other processes competing, SQL Server uses almost all of the memory until another process needs memory to free up memory. In the case of a small concurrency,

--Common date conversion parameters: PRINT convert (varchar, GETDATE (), +) 2016-07-20 16:09:01print Replace (replace (varchar, GETDATE (), +), '-', '), ', '), ': ', ') 20040912110608PRINT convert ( varchar (getdate), 111) 2004/09/12print CONVERT

IntroductionIn SQL Server, using the TOP clause for complex queries can have performance implications, which can be good or bad, with different possibilities for different situations.The SQL statement in the relational database is only an abstract

Get the most complete data dictionary for SQL ServerThe following code is executed in Microsoft SQL Server 2013 bySELECTSysobjects.name astable name,--sys.extended_properties. [Value] As table description,Syscolumns.name asfield name,--Properties.

This article transferred from: Http://zhidao.baidu.com/link?url=V_ Lanovutmin0ku3duamhlsfayfgtz2ioeajh8grnvpozlpd8pudb4iqzl88tnqm9tzlpn5u0vo5k5s-ov7rkkThe same database, when there are multiple logins, the Microsoft SQL Server 2008 Remember password

Date and time data types Data type Storage (bytes) Date Range Accuracy Format example Datetime 8 January 1, 1753-December 31, 9999 3 1/3 ms YYYY-MM-DD hh:mm:ss.nnn

1. functionDeletes a character of the specified length and inserts another set of characters at the specified starting point.2. GrammarSTUFF (character_expression, start, length, Character_expression2)3. Explanationcharacter_expression is the string

MicrosoftSQL Server provides three types of replication. Each type of replication is appropriate for the requirements of different applications. Depending on your application needs, you can use one or more types of replication in your topology:

Problem scenario: In the customer that encountered a operation card dead phenomenonProblem solving:1, how to hook is a deadlock problem: through code tracing, the discovery is to execute a SQL statement timeout, so conjecture may be the table locked2

The previous articles have provided the basic idea of diagnosing all aspects of the database from the whole ... Maybe it's very useful to you, maybe you feel too far away from yourself. So today we are going to make an introduction from some of the

One. Turn off automatic identity column auto-growth:The command required for the operation is: SET Identity_insert [table][on| OFF] After the parameter is "on", means: Open the Identity column manual insertion function. Once the command execution