SQL Server 2008 Connection Strings ConnectionStrings.com MSSQL2008 Manual
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SQL Server 2008 connection strings
.NET libraries
OLE DB providers
ODBC drivers
.NET Framework Data Provider for
SQL Server
SQL Server Native Client 10.0 OLE
DB Provider
Context Connection
SQLXML 4.0 OLEDB Provider
Wrappers and others
SQL Server Native Client 10.0 ODBC
Driver
.NET Framework Data Provider for
ODBC
.NET Framework Data Provider for SQL Server
Connect
Standard Security
Server = myServerAddress; Database = myDataBase; User Id = myUsername;
Password = myPassword;
SQL Server 7.0
SQL Server 2012
.NET Framework Data Provider for
OLE DB
SQL Server 2008
SQL Server 2005
SQL Server 2000
SQL Server 2005
SQL Server 2000
SQL Server ×89
SQL Server 2012 ×38
SQL Server 2008 ×33
SQL Server 2005 ×51
SQL Server 2000 ×39
SQL Server 7.0 ×39
Trusted Connection
Server = myServerAddress; Database = myDataBase; Trusted_Connection = True;
SQL Server 7.0
SQL Server 2012
SQL Server 2008
Q&A
ask question
FailoverPartner not connecting
with primary is down
Connection to a SQL Server instance
The server/instance name syntax used in the server option is the same for all SQL Server
connection strings.
Unable to make any .NET
connection to MSSQL Server
2008 Express
Server = myServerName\myInstanceName; Database = myDataBase; User Id = myUsername;
Password = myPassword;
SQL Server 7.0
SQL Server 2012
SQL Server 2008
SQL Server 2005
SQL Server 2000
Error: A native exception has
occurred in SQLCompact 3.5
under Windows Embedded
Compact 7
Connect from Excel to SQL not
working with id and password
SQL 2008 R2 on Server 2012 R2
connection string issues
Articles
read all
All SQL Server SqlConnection
Properties
Application Name for SQL Server
Connections
Trusted Connection from a CE device
A Windows CE device is most often not authenticated and logged in to a domain but it is possible to
use SSPI or trusted connection and authentication from a CE device using this connection string.
SQL Server Data Types
Reference
Data Source = myServerAddress; Initial Catalog = myDataBase; Integrated Security = SSPI;
User ID = myDomain\myUsername; Password = myPassword;
When to use the SQL Native
Client
Note that this will only work on a CE device.
SQL Server 7.0
SQL Server 2012
SQL Server 2008
SQL Server 2005
SQL Server 2000
Download SQL Server Native
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Connect via an IP address
Network Protocol for SQL Server
Connection
Data Source = 190.190.200.100,1433; Network Library = DBMSSOCN;
Initial Catalog = myDataBase; User ID = myUsername; Password = myPassword;
DBMSSOCN=TCP/IP is how to use TCP/IP instead of Named Pipes.
At the end of the Data Source is the port to use. 1433 is the default
port for SQL Server. Read more here .
SQL Server 2008
SQL Server 2005
SQL Server 7.0
SQL Server 2000
SQL Server 2012
SQL Server 2008 Data Types
Reference
SQL Server 2000 Data Types
Reference
SQL Server 2005 Data Types
Reference
Enable MARS
Server = myServerAddress; Database = myDataBase; Trusted_Connection = True;
MultipleActiveResultSets = true;
SQL Server 2012
SQL Server 2012 Data Types
Reference
SQL Server 2008
SQL Server 2005
Attach a database file on connect to a local SQL Server Express instance
Server = .\SQLExpress; AttachDbFilename = C:\MyFolder\MyDataFile.mdf; Database = dbname;
Trusted_Connection = Yes;
Why is the Database parameter needed? If the named database have already
been attached, SQL Server does not reattach it. It uses the attached database
as the default for the connection.
SQL Server 2008
SQL Server 2005
SQL Server 2012
Attach a database file, located in the data directory, on connect to a local SQL Server
Express instance
Server = .\SQLExpress; AttachDbFilename = |DataDirectory|mydbfile.mdf; Database = dbname;
Trusted_Connection = Yes;
Why is the Database parameter needed? If the named database have already
been attached, SQL Server does not reattach it. It uses the attached database
as the default for the connection.
SQL Server 2008
SQL Server 2005
SQL Server 2012
Database mirroring
If you connect with ADO.NET or the SQL Native Client to a database that is being mirrored, your
application can take advantage of the drivers ability to automatically redirect connections when a
database mirroring failover occurs. You must specify the initial principal server and database in the
connection string and the failover partner server.
Data Source = myServerAddress; Failover Partner = myMirrorServerAddress;
Initial Catalog = myDataBase; Integrated Security = True;
There is ofcourse many other ways to write the connection string using database
mirroring, this is just one example pointing out the failover functionality. You can
combine this with the other connection strings options available.
SQL Server 2008
SQL Server 2005
SQL Server 2012
Asynchronous processing
A connection to SQL Server that allows for the issuing of async requests through ADO.NET objects.
Server = myServerAddress; Database = myDataBase; Integrated Security = True;
Asynchronous Processing = True;
See also the List of all SqlConnection connection string properties
SQL Server 2012
SQL Server 2008
SQL Server 2005
Using an User Instance on a local SQL Server Express instance
The User Instance functionality creates a new SQL Server instance on the fly during connect. This
works only on a local SQL Server instance and only when connecting using windows authentication
over local named pipes. The purpose is to be able to create a full rights SQL Server instance to a
user with limited administrative rights on the computer.
Data Source = .\SQLExpress; Integrated Security = true;
AttachDbFilename = C:\MyFolder\MyDataFile.mdf; User Instance = true;
To use the User Instance functionality you need to enable it on the SQL Server. This is
done by executing the following command: sp_configure 'user instances enabled', '1'. To
disable the functionality execute sp_configure 'user instances enabled', '0'.
SQL Server 2005
SQL Server 2008
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SQL Server Native Client 10.0 OLE DB Provider
Standard security
Provider = SQLNCLI10; Server = myServerAddress; Database = myDataBase; Uid = myUsername;
Pwd = myPassword;
Are you using SQL Server 2008 Express? Don't miss the server name syntax
Servername\SQLEXPRESS where you substitute Servername with the name of
the computer where the SQL Server 2008 Express installation resides.
When to use SQL Native Client?
SQL Server 2005
SQL Server 7.0
SQL Server 2000
SQL Server 2008
SQL Server 2005
SQL Server 2000
SQL Server 7.0
Trusted connection
Provider = SQLNCLI10; Server = myServerAddress; Database = myDataBase;
Trusted_Connection = yes;
SQL Server 2008
Equivalent key-value pair: "Integrated Security=SSPI" equals
"Trusted_Connection=yes"
Connecting to an SQL Server instance
The syntax of specifying the server instance in the value of the server key is the same for all
connection strings for SQL Server.
Provider = SQLNCLI10; Server = myServerName\theInstanceName; Database = myDataBase;
Trusted_Connection = yes;
SQL Server 7.0
SQL Server 2008
SQL Server 2005
SQL Server 2000
Prompt for username and password
This one is a bit tricky. First you need to set the connection object's Prompt property to
adPromptAlways. Then use the connection string to connect to the database.
oConn.Properties("Prompt") = adPromptAlways
oConn.Open "Provider=SQLNCLI10;Server=myServerAddress;DataBase=myDataBase;"
SQL Server 7.0
SQL Server 2008
SQL Server 2005
SQL Server 2000
SQL Server 2008
SQL Server 2005
SQL Server 2005
SQL Server 2000
Enable MARS
Provider = SQLNCLI10; Server = myServerAddress; Database = myDataBase;
Trusted_Connection = yes; MARS Connection = True;
Encrypt data sent over network
Provider = SQLNCLI10; Server = myServerAddress; Database = myDataBase;
Trusted_Connection = yes; Encrypt = yes;
SQL Server 7.0
SQL Server 2008
Attach a database file on connect to a local SQL Server Express instance
Provider = SQLNCLI10; Server = .\SQLExpress; AttachDbFilename = c:\asd\qwe\mydbfile.mdf;
Database = dbname; Trusted_Connection = Yes;
Why is the Database parameter needed? If the named database have already been
attached, SQL Server does not reattach it. It uses the attached database as the default
for the connection.
SQL Server 2005
SQL Server 2008
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Attach a database file, located in the data directory, on connect to a local SQL Server
Express instance
Provider = SQLNCLI10; Server = .\SQLExpress;
AttachDbFilename = |DataDirectory|mydbfile.mdf; Database = dbname;
Trusted_Connection = Yes;
SQL Server 2005
SQL Server 2008
Why is the Database parameter needed? If the named database have already been
attached, SQL Server does not reattach it. It uses the attached database as the default
for the connection.
Database mirroring
If you connect with ADO.NET or the SQL Native Client to a database that is being mirrored, your
application can take advantage of the drivers ability to automatically redirect connections when a
database mirroring failover occurs. You must specify the initial principal server and database in the
connection string and the failover partner server.
Provider = SQLNCLI10; Data Source = myServerAddress;
Failover Partner = myMirrorServerAddress; Initial Catalog = myDataBase;
Integrated Security = True;
SQL Server 2005
SQL Server 2008
There is ofcourse many other ways to write the connection string using database
mirroring, this is just one example pointing out the failover functionality. You can combine
this with the other connection strings options available.
SQLXML 4.0 OLEDB Provider
Using SQL Server Native Client provider (SQLNCLI10)
Provider = SQLXMLOLEDB.4.0; Data Provider = SQLNCLI10; Data Source = myServerAddress;
Initial Catalog = myDataBase; User Id = myUsername; Password = myPassword;
SQL Server 2008
.NET Framework Data Provider for OLE DB
Use an OLE DB provider from .NET
Provider = any oledb provider's name; OledbKey1 = someValue; OledbKey2 = someValue;
See the respective OLEDB provider's connection strings options. The .net OleDbConnection will just
pass on the connection string to the specified OLEDB provider. Read more here .
SQL Server Native Client 10.0 ODBC Driver
Standard security
Driver = {SQL Server Native Client 10.0}; Server = myServerAddress;
Database = myDataBase; Uid = myUsername; Pwd = myPassword;
Are you using SQL Server 2008 Express? Don't miss the server name syntax
Servername\SQLEXPRESS where you substitute Servername with the name of
the computer where the SQL Server 2008 Express installation resides.
When to use SQL Native Client?
SQL Server 2005
SQL Server 7.0
SQL Server 2000
SQL Server 2008
SQL Server 2005
SQL Server 2000
SQL Server 7.0
Trusted Connection
Driver = {SQL Server Native Client 10.0}; Server = myServerAddress;
Database = myDataBase; Trusted_Connection = yes;
Equivalent key-value pair: "Integrated Security=SSPI" equals
"Trusted_Connection=yes"
SQL Server 2008
Connecting to an SQL Server instance
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The syntax of specifying the server instance in the value of the server key is the same for all
connection strings for SQL Server.
Driver = {SQL Server Native Client 10.0}; Server = myServerName\theInstanceName;
Database = myDataBase; Trusted_Connection = yes;
SQL Server 7.0
SQL Server 2008
SQL Server 2005
SQL Server 2000
SQL Server 2005
SQL Server 2000
SQL Server 2008
SQL Server 2005
SQL Server 2005
SQL Server 2000
Prompt for username and password
This one is a bit tricky. First you need to set the connection object's Prompt property to
adPromptAlways. Then use the connection string to connect to the database.
oConn.Properties("Prompt") = adPromptAlways
oConn.Open "Driver={SQL Server Native Client
10.0};Server=myServerAddress;Database=myDataBase;"
SQL Server 7.0
SQL Server 2008
Enable MARS
Driver = {SQL Server Native Client 10.0}; Server = myServerAddress;
Database = myDataBase; Trusted_Connection = yes; MARS_Connection = yes;
Encrypt data sent over network
Driver = {SQL Server Native Client 10.0}; Server = myServerAddress;
Database = myDataBase; Trusted_Connection = yes; Encrypt = yes;
SQL Server 7.0
SQL Server 2008
Attach a database file on connect to a local SQL Server Express instance
Driver = {SQL Server Native Client 10.0}; Server = .\SQLExpress;
AttachDbFilename = c:\asd\qwe\mydbfile.mdf; Database = dbname; Trusted_Connection = Yes;
Why is the Database parameter needed? If the named database have already been
attached, SQL Server does not reattach it. It uses the attached database as the default
for the connection.
SQL Server 2005
SQL Server 2008
Attach a database file, located in the data directory, on connect to a local SQL Server
Express instance
Driver = {SQL Server Native Client 10.0}; Server = .\SQLExpress;
AttachDbFilename = |DataDirectory|mydbfile.mdf; Database = dbname;
Trusted_Connection = Yes;
Why is the Database parameter needed? If the named database have already been
attached, SQL Server does not reattach it. It uses the attached database as the default
for the connection.
SQL Server 2005
SQL Server 2008
Database mirroring
If you connect with ADO.NET or the SQL Native Client to a database that is being mirrored, your
application can take advantage of the drivers ability to automatically redirect connections when a
database mirroring failover occurs. You must specify the initial principal server and database in the
connection string and the failover partner server.
Driver = {SQL Server Native Client 10.0}; Server = myServerAddress;
Failover_Partner = myMirrorServerAddress; Database = myDataBase;
Trusted_Connection = yes;
There is ofcourse many other ways to write the connection string using database mirroring, this is
just one example pointing out the failover functionality. You can combine this with the other
connection strings options available.
SQL Server 2005
SQL Server 2008
Please note if you are using TCP/IP (using the network library parameter) and database mirroring,
including port number in the address (formed as servername,portnumber) for both the main
server and the failover partner can solve some reported issues.
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.NET Framework Data Provider for ODBC
Use an ODBC driver from .NET
Driver = {any odbc driver's name}; OdbcKey1 = someValue; OdbcKey2 = someValue;
See the respective ODBC driver's connection strings options. The .net OdbcConnection will just
pass on the connection string to the specified ODBC driver. Read more here .
Context Connection
Context Connection
Connecting to "self" from within your CLR stored prodedure/function. The context connection lets
you execute Transact-SQL statements in the same context (connection) that your code was invoked
in the first place.
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
SQL Server 2012
SQL Server 2008
SQL Server 2005
Connect
SQL Server
SQL Server 2012
SQL Server 2008
SQL Server 2005
SQL Server 2000
SQL Server 7.0
Articles read all
All SQL Server SqlConnection Properties
Application Name for SQL Server Connections
SQL Server Data Types Reference
When to use the SQL Native Client
Download SQL Server Native Client
Network Protocol for SQL Server Connection
SQL Server 2008 Data Types Reference
SQL Server 2000 Data Types Reference
SQL Server 2005 Data Types Reference
SQL Server 2012 Data Types Reference
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