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Tuesday, November 17, 2009

Access Query from MS Excel

In Microsoft Office 97, the default path for the Northwind database is \Program Files\Microsoft Office\Office\Samples\Northwind.mdb.
A QueryDef is created in Microsoft Access and saved with the database file. It consists of a query and may or may not include criteria.
NOTE: If you receive the "User-defined type not defined" error, activate a module sheet, click References on the Tools menu, and click Microsoft DAO 3.0 Object Library check box.
Retrieving the results of a QueryDef from Microsoft Access is a five step process as follows:

  1. Establish a Database object.
  2. Establish a QueryDef object.
  3. Establish a Recordset Object.
  4. Retrieve the Headers (if desired).
  5. Retrieve the data from the table.

After the data is retrieved, you should close all the objects that you opened by issuing .Close commands.


 

Sub GetQueryDef()

'This sub will get data from an Existing QueryDef in the Northwind

'database and place the data on sheet2.


 

Dim Db As Database

Dim Qd As QueryDef

Dim Rs As Recordset

Dim Ws As Object

Dim i As Integer

Dim Path as String


 

'Set the Path to the database. This line is useful because

'if your database is in another location, you just need to change

'it here and the Path Variable will be used throughout the code.

'

'If you're using Microsoft Office 97, the line should read:

'

'Path = "C:\Program Files\Microsoft

'Office\Office\Samples\Northwind.mdb"

'

Path = "C:\Msoffice\Access\Samples\Northwind.mdb"


 

'Set Ws

Set Ws = Sheets("Sheet1")


 

'This set of code will activate Sheet1 and clear any existing data.

'After clearing the data, it will select cell A1.

Ws.Activate

Range("A1").Activate

Selection.CurrentRegion.Select

Selection.ClearContents

Range("A1").Select


 

'Set the Database and QueryDef. This QueryDef exists in the

'database.

Set Db = Workspaces(0).OpenDatabase(Path, ReadOnly:=True, _

Exclusive:=False)

Set Qd = Db.QueryDefs("Invoices")


 

'Create a new Recordset from the Query based on the stored

'QueryDef.

Set Rs = Qd.OpenRecordset()


 

'This loop will collect the field names and place them in the first

'row starting at "A1."

For i = 0 To Rs.Fields.Count - 1

Ws.Cells(1, i + 1).Value = Rs.Fields(i).Name

Next


 

'This line simply sets the font to bold for the headers.

Ws.Range(Ws.Cells(1, 1), Ws.Cells(1, Rs.Fields.Count)).Font.Bold _

=True


 

'The next line will get the data from the recordset and copy it

'into the Worksheet (Sheet1).


 

Ws.Range("A2").CopyFromRecordset Rs


 

'This next code set will just select the data region and auto-fit

'the columns

Sheets("Sheet1").Select

Range("A1").Select

Selection.CurrentRegion.Select

Selection.Columns.AutoFit

Range("A1").Select


 

Qd.Close

Rs.Close

Db.Close


 

End Sub

        

Source: http://support.microsoft.com/default.aspx?scid=http://support.microsoft.com:80/support/kb/ARTICLES/Q147/7/39.asp&NoWebContent=1

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