access数据库连接

这是一些我用来连接三种数据库的vba代码。

“ somefunctioncall”函数利用“ opendb”函数连接到数据库...

您将必须在后一个函数中输入参数，并取消注释“首选连接字符串”

您可能对此代码有些摆弄，但它应该可以工作...我通过谷歌搜索“连接字符串”使这些字符串脱离了网络...

这些数据库不必位于同一台PC上，只要您可以访问它们，它们就可以位于任何服务器上。

[2014-09-27：z：每个OP请求，随后是修改的代码块]

Public Function opendb() As ADODB.Connection
' This function returns an ADODB.Connection object
' which is required for accessing different types of databases
'
' Her we declare three strings to access database other than MS Access files on your network
' as it was in my case
Dim ORACLE_ConnString As String
Dim SQL_ConnString As String
Dim MSACCESS_ConnString As String
'*****************************************************************
' This variable is used only when accessing a MS Access database
' NOTE: I always keep the form separate from the database when using Access for Database and front end forms
Dim MSAdbPathAndName As String
MSAdbPathAndName = "C:\Reports\Database\msaccessdatabase.mdb"
'Probably could use a MapPath function here ...
'*****************************************************************
Dim DBN As String ' "DATABASENAME"
Dim UID As String '"yourusername"
Dim PWD As String '"yourPASSWORD"
Dim DBS As String '"SERVERNAME"
'Here is where you want to set your parameters for connecting to the desired database
DBS = "thisismywebservername"
UID = "thisisme"
PWD = "thisismypassword"
DBN = "thisismydbname"
'The connection strings are different for each type of database and network setup
ORACLE_ConnString = "Provider=msdaora;Data Source=" & DBN & _
";User Id=" & UID & ";Password=" & PWD & ";"
SQL_ConnString = "Provider=SQLOLEDB;DATA SOURCE=" & DBS & _
";UID=" & UID & _
";PWD=" & PWD & _
";Initial Catalog=" & DBN & ";"
MSACCESS_ConnString = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & _
MSAdbPathAndName & ";"
'Here we declare and set the ADODB.Connection
opendb = New ADODB.Connection
'And finally you must decide which type of connection you are going to use... only one :)
'    *************** preferred connection string ***********
'    UNCOMMENT the ONE you need: if you want to connect to MS SQL then SQL_ConnString is the one you want
'    *******************************************************
'    opendb.Open ORACLE_ConnString
opendb.Open(SQL_ConnString)
'    opendb.Open MSACCESS_ConnString
End Function
Public Function stringReturningFunctionCall() As String
' The connection object is required for accessing the database and must be declared
Dim objConn As ADODB.Connection
' The  recordset object is required for storing the queried dataset and must be declared
Dim recSet As ADODB.Recordset
'This functioncal return a string, we declare and set it to be empty
Dim stringToReturn As String
stringToReturn = ""
'setting the connection object from a function that returns an ADODB.Connection
objConn = opendb
'setting the Recordset object using the Connection object to excute the SQL statement
recSet = objConn.Execute("SELECT [field1],[field2],[field3] FROM [sometable] order by [somefield] ")
Do While Not rs.EOF ' run through the recordset until at the end
'add your own code here
stringToReturn = someStringAppendingFunction(stringToReturn, recSet(0) & _
";" & recSet("field2") & _
";" & recSet("field3"), ";")
recSet.MoveNext()
Loop
'clean up time
objConn.Close()
objConn = Nothing
recSet = Nothing
'return the result
stringReturningFunctionCall = stringToReturn
End Function

翻译自: https://bytes.com/topic/access/insights/917619-connecting-different-databases-ms-access

access数据库连接