Question

DSNLess SQL Query Help

Asked by: rock815

Currently an excel spreadsheet uses Microsoft Query to query a sql database for data using a System DSN.  We want to do the same results/format without using a DSN, but programatically telling it where to grab the data from.  Multiple users will grab the spreadsheet and refresh the data.  We just want to eliminate having to setup an ODBC connection on each workstation.  How would you recommend us doing so?

Thanks for your insight in advance!!!

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Asked On
2004-09-01 at 08:52:40ID21115437
Tags

excel

Topic

Microsoft Excel Spreadsheet Software

Participating Experts
2
Points
500
Comments
2

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Answers

 

by: sebastienmPosted on 2004-09-01 at 10:22:30ID: 11955451

Hi,

1. ODBC-DSN with no specific file.
I recorded the creation of a query using the external data feature of excel:
- menu Data > Import (or Get) External Data
- choose 'Excel Files' as data source (not the defined dsn file)
- then choose a file
Generated code:
With ActiveSheet.QueryTables.Add(Connection:= "ODBC;DSN=Excel Files" _
    & ";DBQ=E:\Book2.xls;DefaultDir=E:;DriverId=790;MaxBufferSize=2048" _
    & ";PageTimeout=5;", Destination:=Range("A1"))

As you can see, you can use the odbc-dsn to connect to Excel FIles, but you can see here you can just specify the file name dynamically (i do not have Book2 registered anywhere... not in my DSN manager either)

2. How To Use ADO with Excel Data from Visual Basic or VBA
  ---> http://support.microsoft.com/default.aspx?scid=kb;en-us;257819

There, you'll see examples for:
-Jet Provider Using a Connection String
-ODBC Provider Using a DSN-Less Connection String
-ODBC Provider Using a Connection String with a DSN

I hope this helps
Regards,
Sebastien

 

by: p_lovePosted on 2004-09-02 at 14:51:36ID: 11968676

Hi,

I'm an old fashioned guy and use DAO all the time to open a database and pull back querys.

Although I include apath to the C: drive, at work I use full UNCs such as \\server\folder\database.mdb.  In fact if the excel file is in the same folder as the database, just the database name is sufficient.

I normally manually type the field names to match the query in the firstrow of a worksheet, and then tell the CopyFromRecordSet method to drop the data in the cell below the first label.

Public Sub DataQuery()
    Dim db As DAO.Database
    Dim qd As DAO.QueryDef
    Dim rs As DAO.Recordset
   
    Dim ws As Worksheet
    Dim rng As Range
   
    Set ws = Worksheets("Sheet1")
    Set rng = ws.Range("A2")
   
    Set db = DAO.OpenDatabase("C:\Database.mdb")
    Set qd = db.QueryDefs("MyQueryToRun")
   
    Set rs = qd.OpenRecordset
   
    If rs.RecordCount > 0 Then
        rng.CopyFromRecordset rs
    End If
   
    db.Close
    qd.Close
    rs.Close
   
   
End Sub

20120131-EE-VQP-002

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