SQL Server2008 连接字符串写法大全

一、.NET Framework Data Provider for SQL Server
类型:.NET Framework类库
使用:System.Data.SqlClient.SqlConnection
厂商:Microsoft
标准安全连接
Data Source = myServerAddress;Initial Catalog = myDataBase;User Id = myUsername;Password = myPassword;
使用服务器名\实例名作为连接指定SQL Server实例的数据源。如果你使用的是SQL Server 2008 Express版,实例名为SQLEXPRESS。
可替代的标准安全连接
Server = myServerAddress;Database = myDataBase;User ID = myUsername;Password = myPassword;Trusted_Connection = False;
这条连接字符串跟上一条效果一样。把这条写出来只是想说,其实很多连接字符串的关键字有多种写法。
信任连接
Data Source = myServerAddress;Initial Catalog = myDataBase;Integrated Security = SSPI;
可替代的信任连接
Server = myServerAddress;Database = myDataBase;Trusted_Connection = True;
连接Windows CE设备的信任连接
通常一台Windows CE设备在一个域里是不能被认证和登录的。为了让一台CE设备使用SSPI或信任连接和认证,可以使用下面的连接字符串:
Data Source = myServerAddress;Initial Catalog = myDataBase;Integrated Security = SSPI;User ID = myDomain \myUsername;Password = myPassword;说明一下,这条语句只能在CE设备上用。
使用IP地址的连接
Data Source = 190.168.1.100,1433;Network Library = DBMSSOCN;Initial Catalog = myDataBase;User ID = myUsername;Password = myPassword;这条语句用TCP/IP地址替代了命名管道。在Data Source字段最后的是使用的端口。SQL Server默认使用的端口是1433。
开启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。
在连接到SQL Server Express实例时附加一个数据库文件
Server = .\SQLExpress;AttachDbFilename = c:\asd\qwe\mydbfile.mdf;Database = dbname; Trusted_Connection = Yes;这里为什么还需要Database字段呢?因为如果指定的数据库文件已经被附加,那么SQL Server不会再附加它,而使用已附加的数据库作为默认数据库。
在连接到SQL Server Express实例时,从数据目录下附加一个数据库文件
Server = .\SQLExpress;AttachDbFilename = |DataDirectory|mydbfile.mdf; Database = dbname;Trusted_Connection = Yes;
在本地SQL Server Express实例上使用用户实例
用户实例这个功能会在连接的过程中,新建一个SQL Server实例。该功能只有在本地SQL Server实例上,且连接时使用通过本地命名通道的Windows认证。这样做的好处是,可以给一个在本地计算机上只有相当有限的管理员权限的用户,新建一个拥有全部权限的SQL Server实例。
Data Source = .\SQLExpress;Integrated Security = true; AttachDbFilename = |DataDirectory|\mydb.mdf;User Instance = true;若想使用用户实例这个功能,需要先在SQL Server将其开启。开启命令为:
sp_configure ‘user instances enabled’, ‘1’
取消命令为:
sp_configure ‘user instances enabled’, ‘0’
注:这两条命令只在SQL Server Express中有效。
数据库镜像
如果你用ADO.NET或者SQL Native Client去连接一个数据库镜像,当这个数据库镜像进行故障切换的时候,你的应用程序可以利用驱动器的特性去自动重定向连接。当然,你必须在连接字段里指定初始的主服务器和数据库,以及用于故障切换的镜像服务器。
Data Source = myServerAddress;Failover Partner = myMirrorServerAddress;Initial Catalog = myDataBase;Integrated Security = True;上面的例子只是介绍了一下如何使用数据库镜像,你可以将Failover Partner字段跟其他连接字符串功能组合使用。
异步处理
Server = myServerAddress;Database = myDataBase;Integrated Security = True;Asynchronous Processing = True;
二、SQL Server Native Client 10.0 OLE DB Provider
类型:OLE DB Provider
使用:Provider=SQLNCLI10
厂商:Microsoft
标准安全连接
Provider = SQLNCLI10;Server = myServerAddress;Database = myDataBase;Uid = myUsername; Pwd = myPassword;
信任连接
Provider = SQLNCLI10;Server = myServerAddress;Database = myDataBase; Trusted_Connection = yes; “Integrated Security=SSPI” 和 “Trusted_Connection=yes”是等价的。
连接一个SQL Server实例
Provider = SQLNCLI10;Server = myServerName\theInstanceName;Database = myDataBase; Trusted_Connection = yes;
用户名、密码提示
oConn.Properties(“Prompt”) = adPromptAlwaysoConn.Open “Provider = SQLNCLI10;Server = myServerAddress;DataBase = myDataBase;
开启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;
在连接到SQL Server Express实例时附加一个数据库文件
Provider = SQLNCLI10;Server = .\SQLExpress;AttachDbFilename = c:\asd\qwe\mydbfile.mdf; Database = dbname; Trusted_Connection = Yes;
在连接到SQL Server Express实例时,从数据目录下附加一个数据库文件
Provider = SQLNCLI10;Server = .\SQLExpress;AttachDbFilename = |DataDirectory|mydbfile.mdf; Database = dbname;Trusted_Connection = Yes;
数据库镜像
Provider = SQLNCLI10;Data Source = myServerAddress;Failover Partner = myMirrorServerAddress;Initial Catalog = myDataBase;Integrated Security = True;
三、.NET Framework Data Provider for OLE DB
类型:.NET Framework Wrapper Class Library
使用:System.Data.OleDb.OleDbConnection
厂商:Microsoft
桥接到SQL Native Client OLE DB
Provider = SQLNCLI10;Server = myServerAddress;Database = myDataBase;Uid = myUsername; Pwd = myPassword;
四、SQL Server Native Client 10.0 ODBC Driver
类型:ODBC Driver
使用:Driver={SQL Server Native Client 10.0}
厂商:Microsoft
标准安全连接
Driver = {SQL Server Native Client 10.0};Server = myServerAddress;Database = myDataBase;Uid = myUsername;Pwd = myPassword;
信任连接
Driver = {SQL Server Native Client 10.0};Server = myServerAddress;Database = myDataBase;Trusted_Connection = yes;
连接一个SQL Server实例
Driver = {SQL Server Native Client 10.0};Server = myServerName\theInstanceName; Database = myDataBase;Trusted_Connection = yes;
用户名、密码提示
oConn.Properties(“Prompt”) = adPromptAlwaysDriver = {SQL Server Native Client 10.0};Server = myServerAddress;Database = myDataBase;
开启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;
在连接到SQL Server Express实例时附加一个数据库文件
Driver = {SQL Server Native Client 10.0};Server = .\SQLExpress; AttachDbFilename = c:\asd\qwe\mydbfile.mdf; Database = dbname;Trusted_Connection = Yes;
在连接到SQL Server Express实例时,从数据目录下附加一个数据库文件
Driver={SQL Server Native Client 10.0};Server=.\SQLExpress;AttachDbFilename=|DataDirectory|mydbfile.mdf; Database=dbname;Trusted_Connection=Yes;
数据库镜像
Driver = {SQL Server Native Client 10.0};Server = myServerAddress;Failover_Partner = myMirrorServerAddress;Database = myDataBase; Trusted_Connection = yes;
五、.NET Framework Data Provider for ODBC
类型:.NET Framework Wrapper Class Library
使用:System.Data.Odbc.OdbcConnection
厂商:Microsoft
桥接到SQL Native Client 10.0 ODBC Driver
下面的语句只是一条例子,不同厂商的ODBC驱动不同。
Driver={SQL Server Native Client 10.0};Server=myServerAddress;Database=myDataBase;Uid=myUsername;Pwd=myPassword;
六、SQLXML 4.0 OLEDB Provider
类型:OLE DB Provider
使用:Provider=SQLXMLOLEDB.4.0;Data Provider=providername
厂商:Microsoft
Provider=SQLXMLOLEDB.4.0;Data Provider=SQLNCLI10;Data Source=myServerAddress;Initial Catalog=myDataBase;User Id=myUsername;Password=myPassword;
七、Context Connection
类型:.NET Framework Class Library
使用:
厂商:Microsoft
通过当前CLR里的存储过程/函数来连接到“自身”。上下文连接可以让你,在你的代码第一次被调用的地方所在的上下文(连接)里,执行T-SQL语句。
C#using(SqlConnection connection = new SqlConnection(“context connection=true”)){ connection.Open(); // Use the connection}VB.NetUsing connection as new SqlConnection(“context connection=true”) connection.Open() ‘ Use the connectionEnd Using分类: SQL Server