excel-vba SQL in Excel VBA - Best Practices How to use ADODB.Connection in VBA?
Example
Requirements:
Add following references to the project:
-
Microsoft ActiveX Data Objects 2.8 Library
-
Microsoft ActiveX Data Objects Recordset 2.8 Library
Declare variables
Private mDataBase As New ADODB.Connection
Private mRS As New ADODB.Recordset
Private mCmd As New ADODB.Command
Create connection
a. with Windows Authentication
Private Sub OpenConnection(pServer As String, pCatalog As String)
Call mDataBase.Open("Provider=SQLOLEDB;Initial Catalog=" & pCatalog & ";Data Source=" & pServer & ";Integrated Security=SSPI")
mCmd.ActiveConnection = mDataBase
End Sub
b. with SQL Server Authentication
Private Sub OpenConnection2(pServer As String, pCatalog As String, pUser As String, pPsw As String)
Call mDataBase.Open("Provider=SQLOLEDB;Initial Catalog=" & pCatalog & ";Data Source=" & pServer & ";Integrated Security=SSPI;User ID=" & pUser & ";Password=" & pPsw)
mCmd.ActiveConnection = mDataBase
End Sub
Execute sql command
Private Sub ExecuteCmd(sql As String)
mCmd.CommandText = sql
Set mRS = mCmd.Execute
End Sub
Read data from record set
Private Sub ReadRS()
Do While Not (mRS.EOF)
Debug.Print "ShipperID: " & mRS.Fields("ShipperID").Value & " CompanyName: " & mRS.Fields("CompanyName").Value & " Phone: " & mRS.Fields("Phone").Value
Call mRS.MoveNext
Loop
End Sub
Close connection
Private Sub CloseConnection()
Call mDataBase.Close
Set mRS = Nothing
Set mCmd = Nothing
Set mDataBase = Nothing
End Sub
How to use it?
Public Sub Program()
Call OpenConnection("ServerName", "NORTHWND")
Call ExecuteCmd("INSERT INTO [NORTHWND].[dbo].[Shippers]([CompanyName],[Phone]) Values ('speedy shipping','(503) 555-1234')")
Call ExecuteCmd("SELECT * FROM [NORTHWND].[dbo].[Shippers]")
Call ReadRS
Call CloseConnection
End Sub
Result
ShipperID: 1 CompanyName: Speedy Express Phone: (503) 555-9831
ShipperID: 2 CompanyName: United Package Phone: (503) 555-3199
ShipperID: 3 CompanyName: Federal Shipping Phone: (503) 555-9931
ShipperID: 4 CompanyName: speedy shipping Phone: (503) 555-1234
