SQL Server 2008鏈接字符串寫法大全

1、.NET Framework Data Provider for SQL Server

類型：.NET Framework類庫
使用：System.Data.SqlClient.SqlConnection
廠商：Microsoft
標準安全鏈接

Data Source = myServerAddress;Initial Catalog = myDataBase;User Id = myUsername;Password = myPassword;

使用服務器名\實例名做爲鏈接指定SQL Server實例的數據源。若是你使用的是SQL Server 2008 Express版，實例名爲SQLEXPRESS。

可替代的標準安全鏈接

Server = myServerAddress;Database = myDataBase;User ID = myUsername;Password = myPassword;Trusted_Connection = False;

這條鏈接字符串跟上一條效果同樣。把這條寫出來只是想說，其實不少鏈接字符串的關鍵字有多種寫法。


信任鏈接

Data Source = myServerAddress;Initial Catalog = myDataBase;Integrated Security = SSPI;

可替代的信任鏈接

Server = myServerAddress;Database = myDataBase;Trusted_Connection = True;

 
鏈接Windows CE設備的信任鏈接

一般一臺Windows CE設備在一個域裏是不能被認證和登陸的。爲了讓一臺CE設備使用SSPI或信任鏈接和認證，可使用下面的鏈接字符串：

Data Source = myServerAddress;Initial Catalog = myDataBase;Integrated Security = SSPI;User ID = myDomain
\myUsername;Password = myPassword;

說明一下，這條語句只能在CE設備上用。

使用IP地址的鏈接

Data Source = 190.168.1.100,1433;Network Library = DBMSSOCN;Initial Catalog = myDataBase;User
ID = myUsername;Password = myPassword;

這條語句用TCP/IP地址替代了命名管道。在Data Source字段最後的是使用的端口。SQL Server默認使用的端口是1433。

開啓MARS功能(multiple active result sets)

Server = myServerAddress;Database = myDataBase;Trusted_Connection = True; MultipleActiveResultSets = true;

MARS不支持ADO.NET 1.0和ADO.NET 1.1。

在鏈接到SQL Server Express實例時附加一個數據庫文件

Server = .\SQLExpress;AttachDbFilename = c:\asd\qwe\mydbfile.mdf;Database = dbname; Trusted_Connection = Yes;

這裏爲何還須要Database字段呢？由於若是指定的數據庫文件已經被附加，那麼SQL Server不會再附加它，而使用已附加的數據庫做爲默認數據庫。

 
在鏈接到SQL Server Express實例時，從數據目錄下附加一個數據庫文件

Server = .\SQLExpress;AttachDbFilename = |DataDirectory|mydbfile.mdf; Database = dbname;Trusted_Connection = Yes;

 
在本地SQL Server Express實例上使用用戶實例

用戶實例這個功能會在鏈接的過程當中，新建一個SQL Server實例。該功能只有在本地SQL Server實例上，且鏈接時使用經過本地命名通道的Windows認證。這樣作的好處是，能夠給一個在本地計算機上只有至關有限的管理員權限的用戶，新建一個擁有所有權限的SQL Server實例。

Data Source = .\SQLExpress;Integrated Security = true; AttachDbFilename = |DataDirectory|\mydb.mdf;User Instance = true;

若想使用用戶實例這個功能，須要先在SQL Server將其開啓。開啓命令爲：

sp_configure 'user instances enabled', '1'

取消命令爲：

sp_configure 'user instances enabled', '0'

注：這兩條命令只在SQL Server Express中有效。

 
數據庫鏡像

若是你用ADO.NET或者SQL Native Client去鏈接一個數據庫鏡像,當這個數據庫鏡像進行故障切換的時候,你的應用程序能夠利用驅動器的特性去自動重定向鏈接。固然，你必須在鏈接字段裏指定初始的主服務器和數據庫，以及用於故障切換的鏡像服務器。

Data Source = myServerAddress;Failover Partner = myMirrorServerAddress;Initial Catalog = myDataBase;Integrated
Security = True;

上面的例子只是介紹了一下如何使用數據庫鏡像，你能夠將Failover Partner字段跟其餘鏈接字符串功能組合使用。

異步處理

Server = myServerAddress;Database = myDataBase;Integrated Security = True;Asynchronous Processing = True;


2、SQL Server Native Client 10.0 OLE DB Provider

類型：OLE DB Provider
使用：Provider=SQLNCLI10
廠商：Microsoft

標準安全鏈接

Provider = SQLNCLI10;Server = myServerAddress;Database = myDataBase;Uid = myUsername; Pwd = myPassword;

 
信任鏈接

Provider = SQLNCLI10;Server = myServerAddress;Database = myDataBase; Trusted_Connection = yes;

 "Integrated Security=SSPI" 和 "Trusted_Connection=yes"是等價的。

鏈接一個SQL Server實例

Provider = SQLNCLI10;Server = myServerName\theInstanceName;Database = myDataBase; Trusted_Connection = yes;


用戶名、密碼提示

oConn.Properties("Prompt") = adPromptAlways
oConn.Open "Provider = SQLNCLI10;Server = myServerAddress;DataBase = myDataBase;

 
開啓MARS功能 (multiple active result sets)

Provider = SQLNCLI10;Server = myServerAddress;Database = myDataBase; Trusted_Connection = yes;MARS Connection = True;

 
加密模式

Provider = SQLNCLI10;Server = myServerAddress;Database = myDataBase; Trusted_Connection = yes;Encrypt = yes;

 
在鏈接到SQL Server Express實例時附加一個數據庫文件

Provider = SQLNCLI10;Server = .\SQLExpress;AttachDbFilename = c:\asd\qwe\mydbfile.mdf; Database = dbname;
Trusted_Connection = Yes;

 
在鏈接到SQL Server Express實例時，從數據目錄下附加一個數據庫文件

Provider = SQLNCLI10;Server = .\SQLExpress;AttachDbFilename = |DataDirectory|mydbfile.mdf;
Database = dbname;Trusted_Connection = Yes;

 
數據庫鏡像

Provider = SQLNCLI10;Data Source = myServerAddress;Failover Partner = myMirrorServerAddress;Initial
Catalog = myDataBase;Integrated Security = True;

 

3、.NET Framework Data Provider for OLE DB

類型：.NET Framework Wrapper Class Library
使用：System.Data.OleDb.OleDbConnection
廠商：Microsoft

橋接到SQL Native Client OLE DB

Provider = SQLNCLI10;Server = myServerAddress;Database = myDataBase;Uid = myUsername; Pwd = myPassword;


4、SQL Server Native Client 10.0 ODBC Driver

類型：ODBC Driver
使用：Driver={SQL Server Native Client 10.0}
廠商：Microsoft

標準安全鏈接

Driver = {SQL Server Native Client 10.0};Server = myServerAddress;Database = myDataBase;Uid = myUsername;Pwd = myPassword;

 
信任鏈接

Driver = {SQL Server Native Client 10.0};Server = myServerAddress;Database = myDataBase;Trusted_Connection = yes;

 
鏈接一個SQL Server實例

Driver = {SQL Server Native Client 10.0};Server = myServerName\theInstanceName;
Database = myDataBase;Trusted_Connection = yes;


用戶名、密碼提示

oConn.Properties("Prompt") = adPromptAlways
Driver = {SQL Server Native Client 10.0};Server = myServerAddress;Database = myDataBase;

 
開啓MARS功能 (multiple active result sets)

Driver = {SQL Server Native Client 10.0};Server = myServerAddress;Database = myDataBase;Trusted_Connection = yes;
MARS_Connection = yes;

 
加密模式

Driver = {SQL Server Native Client 10.0};Server = myServerAddress;Database = myDataBase;
Trusted_Connection = yes;Encrypt = yes;

 
在鏈接到SQL Server Express實例時附加一個數據庫文件

Driver = {SQL Server Native Client 10.0};Server = .\SQLExpress; AttachDbFilename = c:\asd\qwe\mydbfile.mdf;
Database = dbname;Trusted_Connection = Yes;

 
在鏈接到SQL Server Express實例時，從數據目錄下附加一個數據庫文件

Driver={SQL Server Native Client 10.0};Server=.\SQLExpress;AttachDbFilename=|DataDirectory|mydbfile.mdf;
Database=dbname;Trusted_Connection=Yes;

 
數據庫鏡像

Driver = {SQL Server Native Client
10.0};Server = myServerAddress;Failover_Partner = myMirrorServerAddress;Database = myDataBase; Trusted_Connection = yes;

 

5、.NET Framework Data Provider for ODBC

類型：.NET Framework Wrapper Class Library
使用：System.Data.Odbc.OdbcConnection
廠商：Microsoft

橋接到SQL Native Client 10.0 ODBC Driver

下面的語句只是一條例子，不一樣廠商的ODBC驅動不一樣。

Driver={SQL Server Native Client 10.0};Server=myServerAddress;Database=myDataBase;Uid=myUsername;Pwd=myPassword;

 

6、SQLXML 4.0 OLEDB Provider

類型：OLE DB Provider
使用：Provider=SQLXMLOLEDB.4.0;Data Provider=providername
廠商：Microsoft

 

Provider=SQLXMLOLEDB.4.0;Data Provider=SQLNCLI10;Data Source=myServerAddress;Initial Catalog=myDataBase;User
Id=myUsername;Password=myPassword;


7、Context Connection

類型：.NET Framework Class Library
使用：
廠商：Microsoft

經過當前CLR裏的存儲過程/函數來鏈接到「自身」。上下文鏈接可讓你，在你的代碼第一次被調用的地方所在的上下文（鏈接）裏，執行T-SQL語句。


C#

using(SqlConnection connection = new SqlConnection("context connection=true"))
{
    connection.Open();
    // Use the connection
}


VB.Net

Using connection as new SqlConnection("context connection=true")
    connection.Open()
    ' Use the connection
End Using