EXCEL VBA 连接数据库

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简介: 下面的内容转自多个地方 1)http://www.cnblogs.com/fuyiyong/archive/2007/04/12/710340.html(用Excel+VBA+SQL Server进行数据处理 ) sub test()  '定义过程名称Dim i As Inte...
下面的内容转自多个地方
sub  test()   ' 定义过程名称
Dim  i  As   Integer , j  As   Integer , sht  As  Worksheet  ' i,j为整数变量;sht 为excel工作表对象变量,指向某一工作表
Dim  cn  As   New  ADODB.Connection  ' 定义数据链接对象 ,保存连接数据库信息;请先添加ADO引用
Dim  rs  As   New  ADODB.Recordset   ' 定义记录集对象,保存数据表
Dim  strCn  As   String  ,strSQL  as   String   ' 字符串变量

strCn 
=   " Provider=sqloledb;Server=服务器名称或IP地址;Database=数据库名称;Uid=用户登录名;Pwd=密码; "      ' 定义数据库链接字符串

' 下面的语句将读取数据表数据,并将它保存到excel工作表中:画两张表想像一下,工作表为一张两维表,记录集也是一张两维表
strSQL  =   " select  字段1,字段2 from  表名称 "      ' 定义SQL查询命令字符串
cn.Open strCn    ' 与数据库建立连接,如果成功,返回连接对象cn
rs.Open strSQL, cn   ' 执行strSQL所含的SQL命令,结果保存在rs记录集对象中
=   1
Set  sht  =  ThisWorkbook.Worksheets( " sheet1 " )    ' 把sht指向当前工作簿的sheet1工作表
Do   While   Not  rs.EOF      ' 当数据指针未移到记录集末尾时,循环下列操作
    sht.Cells(i,  1 =  rs( " 字段1 " )     ' 把当前记录的字段1的值保存到sheet1工作表的第i行第1列
    sht.Cells(i,  2 =  rs( " 字段2 " )     ' 把当前字段2的值保存到sheet1工作表的第i行第2列
    rs.MoveNext                       ' 把指针移向下一条记录
    i  =  i  +   1                          ' i加1,准备把下一记录相关字段的值保存到工作表的下一行
Loop                                   ' 循环
rs.Close    ' 关闭记录集,至此,程序将把某数据表的字段1和字段2保存在excel工作表sheet1的第1、2列,行数等于数据表的记录数

' 下面的语句将读取excel工作表数据,并将之简单计算后存入数据库,这里使用上面程序中的一些变量
'
假设分别读取工作表sheet1第5行至第500行的第8列和第9列已存在的数据,然后将它们相乘,并将积存入数据库的某个表
strSQL = ""      ' 清空上面定义的变量
for  i = 5   to   500    ' 循环开始,i从5到500
    strSQL = strSQL  &   " insert into 表名(字段) values( "   &  sht.cells(i, 8 ) * sht.cells(i, 9 &   " ) ; "        ' 构造SQL命令串
next
' 至此生成一串SQL命令串,保存的内容大概为:insert into 表名(字段) values(数值1);insert into 表名(字段) values(数值2);img_a76e9bb6ed00cf1c9c9f4ee2f04b558b.gif
cn.execute strSQL   ' 执行该SQL命令串,如果SQL命令没有错误,将在数据库中添加501个记录;也可以用rs.open strSQL,cn 执行
cn.close   ' 关闭数据库链接,释放资源
end sub
Sub GetData()     
     Dim strConn As String, strSQL As String
     Dim conn As ADODB.Connection
     Dim ds As ADODB.Recordset
     Dim col As Integer
     
    '清空电子表格的所有数据      
    Cells.Clear
     
    '连接数据库的字符串      
    strConn = "Provider=SQLOLEDB.1;Persist Security Info=True;User ID=name;Password=pwd;Initial Catalog=dataname;Data Source=servername"
    '查询语句
     strSQL = "select * from table1"
     Set conn = New ADODB.Connection
     Set ds = New ADODB.Recordset
    '打开数据库连接
     conn.Open strConn
     
     With ds
   '根据查询语句获得数据
         .Open strSQL, conn
         
         '自动控制加入所有列标题
         For col = 0 To ds.Fields.Count - 1
    '请注意Offset(0, col)中的参数一定要正确噢
             Range("A1").Offset(0, col).Value = ds.Fields(col).Name
         Next
         
        '加入所有行数据
         Range("a1").Offset(1, 0).CopyFromRecordset ds
     End With
     
    '以下是关闭数据库连接和清空资源
     Set ds = Nothing
     conn.Close
     Set conn = Nothing

 

3)http://www.36588.com.cn/digital/article/article_8489_1.htmlADO连接数据库字符串大全(VP,Excel,文本,Sybase,.NET等))

This page contains sample ADO connection strings for ODBC DSN / DSN-Less,
OLE DB Providers, Remote Data Services (RDS), MS Remote, MS DataShape.

Also included are ADO.NET connection strings for each .NET Managed Provider
(SQLClient, OLEDB, and ODBC).

These sample connection strings are compiled
by Carl Prothman, a Microsoft Visual Basic MVP
Enjoy!

 
Table of Contents
ODBC DSN Connections DSN
File DSN


ODBC DSN-Less Connections  ODBC Driver for AS/400
ODBC Driver for Access
ODBC Driver for dBASE
ODBC Driver for Excel
ODBC Driver for MySQL
ODBC Driver for Oracle
ODBC Driver for Paradox
ODBC Driver for SQL Server
ODBC Driver for Sybase
ODBC Driver for Sybase SQL Anywhere
ODBC Driver for Text
ODBC Driver for Teradata
ODBC Driver for Visual FoxPro


OLE DB Data Link Connections Data Link File (UDL)


OLE DB Data Provider Connections  OLE DB Provider for AS/400
OLE DB Provider for Active Directory Service
OLE DB Provider for DB2
OLD DB Provider for Internet Publishing
OLE DB Provider for Index Server
OLE DB Provider for Microsoft Jet
OLE DB Provider for ODBC Databases
OLE DB Provider for Oracle (From Microsoft)
OLE DB Provider for Oracle (From Oracle)
OLE DB Provider for Simple Provider
OLE DB Provider for SQL Server


Remote Data Service (RDS) Connections RDS Data Control - Connect Property
RDS Data Control - URL Property


ADO URL Connections ADO Recordset


MS Remote Provider Connections MS Remote - Access (Jet)
MS Remote - SQL Server


Data Shape Provider Connections  MS DataShape - SQL Server


.NET Managed Provider Connections SQL Client .NET Managed Provider (System.Data.SqlClient)
OLE DB .NET Managed Provider (System.Data.OleDb)
ODBC .NET Managed Provider (System.Data.ODBC)


 

ODBC DSN Connections
Using an ODBC DSN (Data Source Name) is a two step process.

1) You must first create the DSN via the "ODBC Data Source Administrator" program
found in your computer's Control Panel (or Administrative Tools menu in Windows 2000).
Make sure to create a SYSTEM DSN (not a USER DSN) when using ASP.
Note: You can also create the DSN via VB code.

2) Then use the following connection string - with your own DSN name of course.  ;-)

ODBC - DSN
 
oConn.Open "DSN=AdvWorks;" & _
          "Uid=Admin;" & _
          "Pwd=;

You can also create and use a File DSN. Then use the following ADO Connection string:

ODBC - File DSN
 
oConn.Open "FILEDSN=c:\somepath\mydb.dsn;" & _
          "Uid=Admin;" & _
          "Pwd=;"

For more information, see: About ODBC data sources and
How to Use File DSNs and DSN-less Connections

Note: The problem with DSN is that Users can (and will) modify them (or delete by mistake),
then your program won't work so well... So it's better to use a DSN-Less or OLE DB Provider
connection string with a Trusted Connection if possible!

ODBC DSN-Less Connections
ODBC Driver for AS/400
 
oConn.Open "Driver={Client Access ODBC Driver (32-bit)};" & _
          "System=myAS400;" & _
          "Uid=myUsername;" & _
          "Pwd=myPassword;"

For more information, see:  A Fast Path to AS/400 Client/Server

ODBC Driver for Access
 
For Standard Security:

oConn.Open "Driver={Microsoft Access Driver (*.mdb)};" & _
          "Dbq=c:\somepath\mydb.mdb;" & _
          "Uid=Admin;" & _
          "Pwd=;"

If you are using a Workgroup (System database):

oConn.Open "Driver={Microsoft Access Driver (*.mdb)};" & _
          "Dbq=c:\somepath\mydb.mdb;" & _
          "SystemDB=c:\somepath\mydb.mdw;", _
          "admin", ""

If MDB is located on a network share:

oConn.Open "Driver={Microsoft Access Driver (*.mdb)};" & _
          "Dbq=\\myServer\myShare\myPath\myDb.mdb;"

For more information, see: Microsoft Access Driver Programming Considerations

ODBC Driver for dBASE
 
oConn.Open "Driver={Microsoft dBASE Driver (*.dbf)};" & _
         "DriverID=277;" & _
         "Dbq=c:\somepath;"

Note: Specify the filename in the SQL statement. For example:
     oRs.Open "Select * From user.dbf", oConn, , ,adCmdText

Note: MDAC 2.1 (or greater) requires the Borland Database Engine (BDE) to update dBase DBF files. (Q238431).

For more information, see: dBASE Driver Programming Considerations

ODBC Driver for Excel
 
oConn.Open "Driver={Microsoft Excel Driver (*.xls)};" & _
          "DriverId=790;" & _
          "Dbq=c:\somepath\mySpreadsheet.xls;" & _
          "DefaultDir=c:\somepath;"

For more information, see: Microsoft Excel Driver Programming Considerations

ODBC Driver for MySQL (via MyODBC)
 
To connect to a local database

oConn.Open "Driver={mySQL};" & _
          "Server=MyServerName;" & _
          "Option=16834;" & _
          "Database=mydb;"

To connect to a remote database

oConn.Open "Driver={mySQL};" & _
          "Server=db1.database.com;" & _
          "Port=3306;" & _
          "Option=131072;" & _
          "Stmt=;" & _
          "Database=mydb;" & _
          "Uid=myUsername;" & _
          "Pwd=myPassword;"

For more information, see: Programs Known to Work with MyODBC

ODBC Driver for Oracle
 
For the current Oracle ODBC Driver from Microsoft:

oConn.Open "Driver={Microsoft ODBC for Oracle};" & _
          "Server=OracleServer.world;" & _
          "Uid=myUsername;" & _
          "Pwd=myPassword;"

For the older Oracle ODBC Driver from Microsoft:

oConn.Open "Driver={Microsoft ODBC Driver for Oracle};" & _
          "ConnectString=OracleServer.world;" & _
          "Uid=myUsername;" & _
          "Pwd=myPassword;"

For more information, see: Connection String Format and Attributes

ODBC Driver for Paradox
 
oConn.Open "Driver={Microsoft Paradox Driver (*.db)};" & _
          "DriverID=538;" & _
          "Fil=Paradox 5.X;" & _
          "DefaultDir=c:\dbpath\;" & _
          "Dbq=c:\dbpath\;" & _
          "CollatingSequence=ASCII;"

Note: MDAC 2.1 (or greater) requires the Borland Database Engine (BDE) to update Paradox ISAM fDBF files. (Q230126).

For more information, see: Paradox Driver Programming Considerations

ODBC Driver for SQL Server
 
For Standard Security:

oConn.Open "Driver={SQL Server};" & _
          "Server=MyServerName;" & _
         "Database=myDatabaseName;" & _
         "Uid=myUsername;" & _
          "Pwd=myPassword;"

For Trusted Connection security:

oConn.Open "Driver={SQL Server};" & _
          "Server=MyServerName;" & _
          "Database=myDatabaseName;" & _
          "Uid=;" & _
          "Pwd=;"

' or

oConn.Open "Driver={SQL Server};" & _
          "Server=MyServerName;" & _
          "Database=myDatabaseName;" & _
          "Trusted_Connection=yes;"

To Prompt user for username and password

oConn.Properties("Prompt") = adPromptAlways
oConn.Open "Driver={SQL Server};" & _
          "Server=MyServerName;" & _
          "DataBase=myDatabaseName;"
  

For more information, see: SQLDriverConnect (ODBC)

ODBC Driver for Sybase
 
If using the Sybase System 11 ODBC Driver:

oConn.Open "Driver={SYBASE SYSTEM 11};" & _
          "Srvr=myServerName;" & _
         "Uid=myUsername;" & _
          "Pwd=myPassword;"

If using the Intersolv 3.10 Sybase ODBC Driver:

oConn.Open "Driver={INTERSOLV 3.10 32-BIT Sybase};" & _
          "Srvr=myServerName;" & _
         "Uid=myUsername;" & _
          "Pwd=myPassword;"

For more information, see: Sybase System 10 ODBC Driver Reference Guide

ODBC Driver for Sybase SQL Anywhere
 
oConn.Open "ODBC; Driver=Sybase SQL Anywhere 5.0;" & _
          "DefaultDir=c:\dbpath\;" & _
          "Dbf=c:\sqlany50\mydb.db;" & _
         "Uid=myUsername;" & _
          "Pwd=myPassword;"
          "Dsn="""";"

Note: Including the DSN tag with a null string is absolutely critical or else you get the dreaded -7778 error.

For more information, see: Sybase SQL Anywhere User Guide

ODBC Driver for Teradata
 
oConn.Open "Provider=Teradata;" & _
          "DBCName=MyDbcName;" & _
          "Database=MyDatabaseName;" & _
          "Uid=myUsername;" & _
          "Pwd=myPassword;"

For more information, see Teradata ODBC Driver

ODBC Driver for Text
 
oConn.Open "Driver={Microsoft Text Driver (*.txt; *.csv)};" & _
          "Dbq=c:\somepath\;" & _
          "Extensions=asc,csv,tab,txt;" & _
          "Persist Security Info=False"

Note: Specify the filename in the SQL statement. For example:

oRs.Open "Select * From customer.csv", _
        oConn, adOpenStatic, adLockReadOnly, adCmdText


For more information, see: Text File Driver Programming Considerations

ODBC Driver for Visual FoxPro
 
With a database container:

oConn.Open "Driver={Microsoft Visual FoxPro Driver};" & _
          "SourceType=DBC;" & _
          "SourceDB=c:\somepath\mySourceDb.dbc;" & _
          "Exclusive=No;"

Without a database container (Free Table Directory):

oConn.Open "Driver={Microsoft Visual FoxPro Driver};" & _
          "SourceType=DBF;" & _
          "SourceDB=c:\somepath\mySourceDbFolder;" & _
          "Exclusive=No;"

For more information, see: Visual FoxPro ODBC Driver and Q165492


OLE DB Data Link Connections
Data Link File (UDL)
 
For Absolute Path:

oConn.Open "File Name=c:\somepath\myDatabaseName.udl;"

For Relative Path:

oConn.Open "File Name=myDatabaseName.udl;"
 

For more information, see: HOWTO: Use Data Link Files with ADO

Note: Windows 2000 no longer contains the "New | Microsoft Data Link" menu 
anymore. You can add the Data Link menu back in the menu list by running the
"C:\Program Files\Common Files\System\Ole DB\newudl.reg" reg file,
then right-click on the desktop and select "New | Microsoft Data Link" menu. 
Or you can also create a Data Link file by creating a text file and change it's
file extension to ".udl", then double-click the file.


OLE DB Provider Connections
OLE DB Provider for AS/400
 
oConn.Open "Provider=IBMDA400;" & _
          "Data source=myAS400;"
          "User Id=myUsername;" & _
          "Password=myPassword;"

For more information, see:  A Fast Path to AS/400 Client/Server

OLE DB Provider for Active Directory Service
 
oConn.Open "Provider=ADSDSOObject;" & _
          "User Id=myUsername;" & _
          "Password=myPassword;"
 

For more information, see: Microsoft OLE DB Provider for Microsoft Active Directory Service

OLE DB Provider for DB2
 
oConn.Open = "Provider=DB2OLEDB;" &
           "Network Transport Library=TCPIP;" &
           "Network Address=MyServer;" & _
           "Package Collection=MyPackage;" &
           "Host CCSID=1142"
           "Initial Catalog=MyDB;" &
           "User ID=MyUsername;" & _
           "Password=MyPassword;"

For more information, see: OLE DB Provider for DB2
and INF: Configuring Data Sources for the Microsoft OLE DB Provider for DB2

OLE DB Provider for Index Server
 
oConn.Open "Provider=msidxs;" & _
          "Data source=MyCatalog;"
 

For more information, see: Microsoft OLE DB Provider for Microsoft Indexing Service

OLE DB Provider for Internet Publishing
 
oConn.Open "Provider=MSDAIPP.DSO;" & _
      "Data Source=http://mywebsite/myDir;" & _
      "User Id=myUsername;" & _
      "Password=myPassword;"
 

For more information, see: Microsoft OLE DB Provider for Internet Publishing and Q245359

OLE DB Provider for Microsoft Jet
 
For standard security:

oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
          "Data Source=c:\somepath\myDb.mdb;" & _
          "User Id=admin;" & _
          "Password=;"

If using a Workgroup (System Database):

oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
          "Data Source=c:\somepath\mydb.mdb;" & _
          "Jet OLEDB:System Database=MySystem.mdw;", _
          "admin", ""

Note, remember to convert both the MDB and the MDW to the 4.0 database format when using the 4.0 OLE DB Provider.

If MDB has a database password:

oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
          "Data Source=c:\somepath\mydb.mdb;" & _
          "Jet OLEDB:Database Password=MyDbPassword;", _
          "admin", ""

If MDB is located on a network share:

oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
          "Data Source=\\myServer\myShare\myPath\myDb.mdb;

If want to open up the Access database exclusively:

oConn.Mode = adModeShareExclusive
oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
          "Data Source=c:\somepath\myDb.mdb;" & _
          "User Id=admin;" & _
          "Password=;"


For more information, see: OLE DB Provider for Microsoft Jet, Q191754, Q225048, Q239114, and Q271908

You can also open an Excel Spreadsheet using the "OLE DB Provider for Microsoft Jet"

oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
          "Data Source=c:\somepath\myExcelSpreadsheet.xls;" & _
          "Extended Properties=""Excel 8.0;HDR=Yes;"";"

Where "HDR=Yes" means that there is a header row in the cell range
(or named range), so the provider will not include the first row of the
selection into the recordset. If "HDR=No", then the provider will include
the first row of the cell range (or named ranged) into the recordset.

For more information, see: Q278973

You can also open a Text File using the "OLE DB Provider for Microsoft Jet"

oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
          "Data Source=c:\somepath\;" & _
          "Extended Properties=""text;HDR=Yes;FMT=Delimited;"";"

' Then open a recordset based on a select on the actual file
oRs.Open "Select * From MyTextFile.txt", oConn, adOpenStatic, adLockReadOnly, adCmdText

For more information, see: Q262537

OLE DB Provider for ODBC Databases
 
For Access (Jet):

oConn.Open "Provider=MSDASQL;" & _
          "Driver={Microsoft Access Driver (*.mdb)};" & _
          "Dbq=c:\somepath\mydb.mdb;" & _
          "Uid=myUsername;" & _
          "Pwd=myPassword;"

For SQL Server:

oConn.Open "Provider=MSDASQL;" & _
          "Driver={SQL Server};" & _
          "Server=myServerName;" & _
          "Database=myDatabaseName;" & _
          "Uid=myUsername;" & _
          "Pwd=myPassword;"

For more information, see: Microsoft OLE DB Provider for ODBC

OLE DB Provider for Oracle (from Microsoft)
 
oConn.Open "Provider=msdaora;" & _
          "Data Source=MyOracleDB;" & _
          "User Id=myUsername;" & _
          "Password=myPassword;"

For more information, see: Microsoft OLE DB Provider for Oracle

OLE DB Provider for Oracle (from Oracle)
 
For Standard Security:

oConn.Open "Provider=OraOLEDB.Oracle;" & _
          "Data Source=MyOracleDB;" & _
          "User Id=myUsername;" & _
          "Password=myPassword;"

For a Trusted Connection:

oConn.Open "Provider=OraOLEDB.Oracle;" & _
          "Data Source=MyOracleDB;" & _
          "User Id=/;" & _
          "Password=;"
' Or

oConn.Open "Provider=OraOLEDB.Oracle;" & _
          "Data Source=MyOracleDB;" & _
          "OSAuthent=1;"
 

Note: "Data Source=" must be set to the appropriate Net8 name which is known to the naming method in use. For example, for Local Naming, it is the alias in the tnsnames.ora file; for Oracle Names, it is the Net8 Service Name.

For more information, see: Connecting to an Oracle Database
(Note, if you get a Logon dialog, then click Cancel, then perform a one-time free signup with Oracle's TechNet system)

OLE DB Provider for Simple Provider
 
The Microsoft OLE DB Simple Provider (OSP) allows ADO to access any data for which a provider has
been written using the OLE DB Simple Provider Toolkit. Simple providers are intended to access data
sources that require only fundamental OLE DB support, such as in-memory arrays or XML documents.

OSP in MDAC 2.6 has been enhanced to support opening hierarchical ADO Recordsets over arbitrary
XML files. These XML files may contain the ADO XML persistence schema, but it is not required. This
has been implemented by connecting the OSP to the MSXML2.DLL, therefore MSXML2.DLL or newer is
required.

oConn.Open "Provider=MSDAOSP;" & _
          "Data Source=MSXML2.DSOControl.2.6;"

oRS.Open "http://WebServer/VirtualRoot/MyXMLFile.xml", oConn


For more information, see: Microsoft OLE DB Simple Provider

OLE DB Provider for SQL Server
 
For Standard Security:

oConn.Open "Provider=sqloledb;" & _
          "Data Source=myServerName;" & _
          "Initial Catalog=myDatabaseName;" & _
          "User Id=myUsername;" & _
          "Password=myPassword;"

For a Trusted Connection:

oConn.Open "Provider=sqloledb;" & _
          "Data Source=myServerName;" & _
          "Initial Catalog=myDatabaseName;" & _
          "Integrated Security=SSPI;"

To connect to a "Named Instance" (SQL Server 2000)

oConn.Open "Provider=sqloledb;" & _
          "Data Source=myServerName\Inst2;" & _
          "Initial Catalog=myDatabaseName;" & _
          "User Id=myUsername;" & _
          "Password=myPassword;"

To Prompt user for username and password:

oConn.Provider = "sqloledb"
oConn.Properties("Prompt") = adPromptAlways
oConn.Open "Data Source=myServerName;" & _
          "Initial Catalog=myDatabaseName;"

To connect via an IP address:

oConn.Open "Provider=sqloledb;" & _
          "Data Source=xxx.xxx.xxx.xxx,1433;" & _
          "Network Library=DBMSSOCN;" & _
          "Initial Catalog=myDatabaseName;" & _
          "User ID=myUsername;" & _
          "Password=myPassword;"

Note:
- xxx.xxx.xxx.xxx is an IP address
- "Network Library=DBMSSOCN" tells OLE DB to use TCP/IP rather than Named Pipes (Q238949)
- 1433 is the default port number for SQL Server
- You can also add "Encrypt=yes" for encryption

For more information, see: Microsoft OLE DB Provider for SQL Server


Remote Data Service (RDS) Connections
The following examples show how to connect to a remote database using the RDS Data Control.
When using the RDS DataControl's Server/SQL/Connect properties, the RDS DataControl uses the
RDS DataFactory on the remote server. If you use the RDS DataControl's URL property,
then the RDS DataFactory is not used at all.

WARNING: The RDS DataFactory can be a major security hole if not setup and configured correctly!
For more information, see RDS FAQ #24

RDS DataControl - Connect Property
 
With the RDS default handler disabled (not recommend due to security risks):

With oRdc
  .Server = "http://carl2"
  .Sql = "Select * From Authors Where State = 'CA'"
  .Connect = "Provider=sqloledb;" & _
           "Data Source=(local);" & _
           "Initial Catalog=pubs;" & _
           "User Id=sa;" & _
           "Password=;"
  .Refresh
End With

With the RDS default handler enabled (recommend):

With oRdc
  .Server = "http://carl2"
  .Handler = "MSDFMAP.Handler"
  .Connect = "Data Source=MyConnectTag;"
  .Sql = "MySQLTag(""CA"")"
  .Refresh
End With

The corresponding CONNECT and SQL sections in the default handler \WINNT\MSDFMAP.INI file would be:

[connect MyConnectTag]
Access = ReadWrite
Connect = "Provider=sqloledb;Data Source=(local);Initial Catalog=pubs;User Id=sa;Password=;"

[sql MySQLTag]
Sql = "Select * From Authors Where State = '?'"

For more information about the RDS Default Handler, see:
Q243245, Q230680, and RDS Customization Handler Microsoft articles

RDS DataControl - URL Property
 
To get records from a remote database:

With oRdc
  .URL = "http://carlp0/Authors_GetByState.asp?state=CA"
  .Refresh
End With

To save, set the URL property to an ASP web page:

With oRdc
  .URL = "http://carlp0/rdsdatacontrol/Authors_Save.asp"
  .SubmitChanges
End With

For more information, see: RDS URL Property


ADO URL Connections
ADO 2.5+ allows you to open up a Recordset based on XML returned from an ASP file over HTTP. 
This feature doesn't use RDS at all.

ADO Recordset
 
To get records from a remote database:

oRs.Open "http://carlp0/Authors_GetByState.asp?state=CA", , _
                      adOpenStatic, adLockBatchOptimistic

To save changes, you must use the MSXML's XMLHTTP object to POST back the updated XML. 
The Recordset's Update and UpdateBatch methods will not work in this case.

' Save Recordset into Stream
Set oStm = New ADODB.Stream
oRs.Save oStm, adPersistXML

' Use MSXML's XMLHTTP object to open ASP and post a XML stream
Set oXMLHTTP = New MSXML2.XMLHTTP30
oXMLHTTP.Open "POST", "http://carlp0/Authors_Save.asp", False
oXMLHTTP.Send oStm.ReadText

' If an error occurred
If oXMLHTTP.Status = 500 Then
  Debug.Print oXMLHTTP.statusText
End If

For more information, see: ADO Recordset's Open Method


MS Remote Provider Connections
The following connections strings use Microsoft's remote provider (MS Remote). The MS Remote
provider tells ADO to communicate with the remote server (via the RDS DataFactory) and to use
the remote provider that is installed on the remote server.

WARNING: The RDS DataFactory can be a major security hole if not setup and configured correctly! 
For more information, see RDS FAQ #24
  

MS Remote - Access (Jet)
 
If you want to use an ODBC DSN on the remote machine:

oConn.Open "Provider=MS Remote;" & _
          "Remote Server=http://myServerName;" & _
          "Remote Provider=MSDASQL;" & _
          "DSN=AdvWorks;" & _
          "Uid=myUsername;" & _
          "Pwd=myPassword;"

If you want to use an OLE DB Provider on the remote machine:

oConn.Open "Provider=MS Remote;" & _
          "Remote Server=http://myServerName;" & _
          "Remote Provider=Microsoft.Jet.OLEDB.4.0;" & _
          "Data Source=c:\somepath\mydb.mdb;", _
          "admin", ""

If you want to use an OLE DB Provider on the remote machine (via RDS DataFactory Default Handler):

oConn.Open "Provider=MS Remote;" & _
          "Remote Server=http://myServerName;" & _
          "Handler=MSDFMAP.Handler;" & _
          "Data Source=MyAdvworksConn;"

The corresponding entry in the \winnt\Msdfmap.ini file would be:

[connect MyAdvworksConn]
Access = ReadWrite
Connect = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
        "Data Source=mydb.mdb;" & _
        "User Id=admin;" & _
        "Password=;"
 

MS Remote - SQL Server
 
If you want to use an ODBC DSN on the remote machine:

oConn.Open "Provider=MS Remote;" & _
          "Remote Server=http://myServerName;" & _
          "Remote Provider=MSDASQL;" & _
          "DSN=myDatabaseName;" & _
          "Uid=myUsername;" & _
          "Pwd=myPassword;"

If you want to use an OLE DB Provider on the remote machine:

oConn.Open "Provider=MS Remote;" & _
          "Remote Server=http://myServerName;" & _
          "Remote Provider=SQLOLEDB;" & _
         "Data Source=myServerName;" & _
         "Initial Catalog=myDatabaseName;" & _
         "User ID=myUsername;" & _
          "Password=myPassword;"

If you want to use an OLE DB Provider on the remote machine (via RDS DataFactory Default Handler):

oConn.Open "Provider=MS Remote;" & _
          "Remote Server=http://myServerName;" & _
          "Handler=MSDFMAP.Handler;" & _
          "Data Source=MyPubsConn;"

The corresponding entry in the \winnt\Msdfmap.ini file would be:

[connect MyPubsConn]
Access = ReadWrite
Connect = "Provider=SQLOLEDB;" & _
        "Data Source=myServerName;" & _
        "Initial Catalog=myDatabaseName;" & _
        "User ID=myUsername;" & _
        "Password=myPassword;"

For more information, see: Microsoft OLE DB Remoting Provider  and Q240838


Data Shape Provider Connections
MS DataShape - SQL Server
 
oConn.Open "Provider=MSDataShape;" & _
          "Data Provider=SQLOLEDB;" & _
          "Data Source=mySQLServerName;" & _
          "Initial Catalog=myDatabase;" & _
          "User ID=myUsername;" & _
          "Password=myPassword;"

Then use a Shape command with SQL strings:
sSQL = "SHAPE {select * from authors} " & _
      "APPEND ({select * from titleauthor} AS chapter " & _
      "RELATE au_id TO au_id)"

Or use a Shape command that calls Stored Procedures:
sSQL = "SHAPE {exec spAuthors_LoadAll} " & _
      "APPEND ({exec spTitleAuthor_LoadAll} AS chapter " & _
      "RELATE au_id TO au_id)"

For more information, see: Microsoft Data Shaping Service for OLE DB and Q288409


.NET Managed Provider Connections
SQL Client .NET Managed Provider (System.Data.SqlClient)
 
The SQL Client .NET Managed Provide allows you to connect to a Microsoft SQL Server 7.0
or 2000 database. For Microsoft SQL Server 6.0 or earlier, use the OLE DB .NET Data Provider
with the "SQL Server OLE DB Provider" (SQLOLEDB).

Dim oSQLConnection As SqlClient.SqlConnection
Dim sConnString As String

sConnString = "Data Source=(local);" & _
           "Initial Catalog=NorthWind;" & _
           "Integrated Security=SSPI;" & _
           "Pooling=True;" & _
           "Min Pool Size=10;" & _
           "Max Pool Size=50;" & _
           "Connection Lifetime=30;" & _
           "Connection Reset=True;" & _
           "Enlist=True;"
oSQLConnection = New SqlClient.SqlConnection(sConnString)
oSQLConnection.Open()

For more information, see: System.Data.SQL Namespace and .NET Data Providers
Note: 'SQL' namespace got renamed to 'SQLClient'

OLE DB .NET Managed Provider (System.Data.OleDb)
 
The OLE DB .NET Data Provider uses native OLE DB through COM interop to enable data access. 
To use the OLE DB .NET Data Provider, you must also use an OLE DB provider (e.g. SQLOLEDB,
MSDAORA, or Microsoft.JET.OLEDB.4.0).

For SQL Server OLE DB Provider (for SQL Server 6.0 or earlier)

Dim oOleDbConnection As OleDb.OleDbConnection
Dim sConnString As String

sConnString = "Provider=sqloledb;" & _
           "Data Source=myServerName;" & _
           "Initial Catalog=myDatabaseName;" & _
           "User Id=myUsername;" & _
          "Password=myPassword;"
oOleDbConnection = New OleDb.OleDbConnection(sConnString)
oOleDbConnection.Open()

For JET OLE DB Provider:

Dim oOleDbConnection As OleDb.OleDbConnection
Dim sConnString As String

sConnString = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
           "Data Source=C:\Work\nwind.mdb;" & _
           "User ID=Admin;" & _
           "Password="";"
oOleDbConnection = New OleDb.OleDbConnection(sConnString)
oOleDbConnection.Open()

For more information, see: System.Data.OleDb Namespace and .NET Data Providers
Note: 'ADO' namespace got renamed to 'OleDb'

ODBC .NET Managed Provider (System.Data.ODBC)
 
The ODBC .NET Data Provider is an add-on component to the .NET Framework SDK Beta 2.
It provides access to native ODBC drivers the same way the OLE DB .NET Data Provider
provides access to native OLE DB providers.

For SQL Server ODBC Driver:

Dim oODBCConnection As Odbc.OdbcConnection
Dim sConnString As String

' Create and open a new ODBC Connection
sConnString = "Driver={SQL Server};" & _
           "Server=MySQLServerName;" & _
           "Database=MyDatabaseName;" & _
           "Uid=MyUsername;" & _
           "Pwd=MyPassword;"

oODBCConnection = New Odbc.OdbcConnection(sConnString)
oODBCConnection.Open()

For Oracle ODBC Driver:

Dim oODBCConnection As Odbc.OdbcConnection
Dim sConnString As String

' Create and open a new ODBC Connection
sConnString = "Driver={Microsoft ODBC for Oracle};" & _
          "Server=OracleServer.world;" & _
          "Uid=myUsername;" & _
          "Pwd=myPassword;"

oODBCConnection = New Odbc.OdbcConnection(sConnString)
oODBCConnection.Open()

For Access (JET) ODBC Driver:

Dim oODBCConnection As Odbc.OdbcConnection
Dim sConnString As String

' Create and open a new ODBC Connection
sConnString = "Driver={Microsoft Access Driver (*.mdb)};" & _
          "Dbq=c:\somepath\mydb.mdb;" & _
          "Uid=Admin;" & _
          "Pwd=;"

oODBCConnection = New Odbc.OdbcConnection(sConnString)
oODBCConnection.Open()

For all other ODBC Drivers:

Dim oODBCConnection As Odbc.OdbcConnection
Dim sConnString As String

' Create and open a new ODBC Connection
sConnString = "Dsn=myDsn;" & _
           "Uid=myUsername;" & _
           "Pwd=myPassword;"

oODBCConnection = New Odbc.OdbcConnection(sConnString)
oODBCConnection.Open()

For more information, see: Download Center


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