ADO資料庫連接配接語句(大全?)

資料庫連接配接查詢手冊

下面将簡單介紹一下幾種ADO連接配接方式：ODBC DSN,ODBC DSN-Less, 

OLE DB Provider 和 MS Remote Provider

I.DSN

oConn.Open "DSN=AdvWorks;" & _ 

"UID=Admin;" & _ 

"PWD=;"

注意：從MDAC2.1開始就不能夠在使用這樣的方式了，就是隻把DSN檔案名放在ConnectString中

你必須同時使用DSN，UID，PWD标志。例如下面的方式在MDAC 2.1中将會出錯：

oConn.Open "AdvWorks"

II.File DSN

oConn.Open "FILEDSN=/somepath/mydb.dsn;" & _ 

"UID=Admin;" & _

"PWD=;"

III.ODBC DSN-Less Connections

a)ODBC Text Driver

oConn.Open _

"Driver={Microsoft Text Driver (*.txt; *.csv)};" & _

"Dbq=/somepath/;" & _

"Extensions=asc,csv,tab,txt;" & _

"Persist Security Info=False"

注意：需要在SQL語句中指定使用到的檔案名。例如：

oRs.Open "Select * From customer.csv", _

oConn, adOpenStatic, adLockReadOnly, adCmdText

b)ODBC Driver for Access

i)普通安全模式：

oConn.Open _

"Driver={Microsoft Access Driver (*.mdb)};" & _ 

"Dbq=/somepath/mydb.mdb;" & _

"Uid=Admin;" & _

"Pwd=;"

ii)如果使用了System database:

oConn.Open _

"Driver={Microsoft Access Driver (*.mdb)};" & _ 

"Dbq=/somepath/mydb.mdb;" & _

"SystemDB=/somepath/mydb.mdw;", _

"admin", ""

c)ODBC Driver for SQL Server

i)普通安全模式

oConn.Open "Driver={SQL Server};" & _ 

"Server=carl2;" & _

"Database=pubs;" & _

"Uid=sa;" & _

"Pwd=;"

ii)使用信任安全模式：

oConn.Open "Driver={SQL Server};" & _ 

"Server=carl2;" & _

"Database=pubs;" & _

"Uid=;" & _

"Pwd=;"

注意：要使用空白的Uid和Pwd 

d)ODBC Driver for Oracle

i)使用現有的Oracle ODBC Driver from Microsoft:

oConn.Open _

"Driver={Microsoft ODBC for Oracle};" & _

"Server=OracleServer.world;" & _

"Uid=demo;" & _

"Pwd=demo;"

ii)使用老版本的Oracle ODBC Driver from Microsoft:

oConn.Open _

"Driver={Microsoft ODBC Driver for Oracle};" & _

"ConnectString=OracleServer.world;" & _

"Uid=demo;" & _

"Pwd=demo;"

IV.使用微軟的OLE DB Data Link Connections方式Data Link File (UDL)

a)使用絕對路徑

oConn.Open "File Name=/somepath/pubs.udl;" 

b)使用相對路徑

oConn.Open "File Name=pubs.udl;" 

V.OLE DB Provider Connections方式

a)OLE DB Provider for ODBC Databases

i)Access (Jet):

oConn.Open _

"Provider=MSDASQL;" & _ 

"Driver={Microsoft Access Driver (*.mdb)};" & _

"Dbq=/somepath/mydb.mdb;" & _

"Uid=Admin;" & _

"Pwd=;"

ii)SQL Server:

oConn.Open _

"Provider=MSDASQL;" & _ 

"Driver={SQL Server};" & _

"Server=carl2;" & _

"Database=pubs;" & _

"Uid=sa;" & _

"Pwd=;"

b)OLE DB Provider for Microsoft Jet (Access)

i)普通安全模式：

oConn.Open _

"Provider=Microsoft.Jet.OLEDB.4.0;" & _

"Data Source=/somepath/mydb.mdb;" & _ 

"User Id=admin;" & _

"Password=;"

ii)如果使用了System database:

oConn.Open _

"Provider=Microsoft.Jet.OLEDB.4.0;" & _

"Data Source=/somepath/mydb.mdb;" & _ 

"Jet OLEDB:System Database=system.mdw;", _

"admin", "" 

注意：當使用OLE DB Provider4.0版本是，需要把MDB和MDW檔案轉換成4.0的資料庫格式

iii)如果MDB需要一個資料庫密碼的話：

oConn.Open _

"Provider=Microsoft.Jet.OLEDB.4.0;" & _

"Data Source=/somepath/mydb.mdb;" & _ 

"Jet OLEDB:Database Password=MyDbPassword;", _

"admin", ""

c)OLE DB Provider for Excel Spreadsheet: 

oConn.Open _

"Provider=Microsoft.Jet.OLEDB.4.0;" & _

"Data Source=/somepath/expenses.xls;" & _

"Extended Properties=""Excel 8.0;HDR=Yes;"";" 

注意： "HDR=Yes"表示在第一行中是行标題，在provider中将不把第一行包括入recordset中

d)OLE DB Provider for SQL Server

i)普通安全模式：

oConn.Open "Provider=sqloledb;" & _ 

"Network Library=DBMSSOCN;" & _

"Data Source=carl2;" & _

"Initial Catalog=pubs;" & _

"User Id=sa;" & _

"Password=;"

ii)使用信任安全模式：

oConn.Open "Provider=sqloledb;" & _

Network Library=DBMSSOCN;" & _

"Data Source=carl2;" & _

"Initial Catalog=pubs;" & _

"Trusted_Connection=yes;"

注意："Network Library=DBMSSOCN"聲明OLE DB使用TCP/IP替代Named Pipes.

e)OLE DB Provider for Oracle

oConn.Open "Provider=msdaora;" & _

"Data Source=OracleServer.world;" & _ 

"User Id=sa;" & _

"Password=;"

VI.Remote OLE DB Provider Connections方式

a)MS Remote - Access (Jet)

i)ODBC DSN:

oConn.Open "Remote Server=http://carl2;" & _ 

"Remote Provider=MSDASQL;" & _

"DSN=AdvWorks;" & _

"Uid=admin" & _

"Pwd=;" 

ii)OLE DB Provider:

oConn.Open "Provider=MS Remote;" & _ 

"Remote Server=http://carl2;" & _

"Remote Provider=Microsoft.Jet.OLEDB.4.0;" & _

"Data Source=/somepath/mydb.mdb;", _

"admin", ""

iii)OLE DB Provider自定義事務對象

oConn.Open "Provider=MS Remote;" & _ 

"Remote Server=http://carl2;" & _

"Handler=MSDFMAP.Handler;" & _

"Data Source=MyAdvworksOLEDBConnectTag;"

b)MS Remote - SQL Server

i)ODBC DSN:

oConn.Open "Remote Server=http://carl2;" & _ 

"Remote Provider=MSDASQL;" & _

"Network Library=DBMSSOCN;" & _

"DSN=Pubs;" & _

"Uid=sa" & _

"Pwd=;" 

ii)OLE DB Provider

oConn.Open "Provider=MS Remote;" & _ 

"Remote Server=http://carl2;" & _

"Remote Provider=SQLOLEDB;" & _

"Network Library=DBMSSOCN;" & _

"Data Source=carl2;" & _

"Initial Catalog=pubs;" & _

"User ID=sa;" & _

"Password=;"