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VBA - working with data videos | Excel VBA Part 56.7 - ADO Commands and Stored Procedures

Posted by Andrew Gould on 05 July 2019

Excel VBA Part 56.7 - ADO Commands and Stored Procedures

This video shows you how to call and pass values to stored procedures from a SQL Server database using ADO commands. You'll learn how to reference parameters by name, how to pass values to parameters and how to retrieve a result set using a recordset object. You'll also see how to extract information from a stored procedure using output parameters.

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This video has the following accompanying files:

File name	Type	Description
01 Create Movies Database 2016.sql	SQL query
02 Create Movie Procedure Single Parameter.sql	SQL query
03 Create Movie Procedure Multi Parameters.sql	SQL query
04 Create Movie Procedure Output Parameters.sql	SQL query
Stored Procedures and Parameters with ADO.xlsm	Excel workbook with macros

Click to download a zipped copy of the above files.

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From:	duggie
When:	18 Mar 20 at 08:01

Reply to duggie

Andrew,

I have followed your video and everything works fine.

However, I would like to find out the number of records in the recordset because if there are more than 1m records, they can't be returned to the worksheet and so I would like to do some filtering to the results.

I added these few lines to your existing code:

Dim j

j = rs.GetRows(rs.RecordCount)

Dim myarray() As Variant

myarray = j

So altogether, the entire code is as follows:

Sub GetDataFromStoredProcedure()

Dim cn As ADODB.Connection
Dim cmd As ADODB.Command
Dim rs As ADODB.Recordset

Set cn = New ADODB.Connection

cn.ConnectionString = _
"Provider=SQLNCLI11;Server=MYLAPTOPNAME\SQLEXPRESS;Database=Movies;Trusted_Connection=yes"

cn.Open

Set cmd = New ADODB.Command

cmd.ActiveConnection = cn
cmd.CommandType = adCmdStoredProc
cmd.CommandText = "spFilmList"

Set rs = cmd.Execute

Dim j

j = rs.GetRows(rs.RecordCount)

Dim myarray() As Variant

myarray = j

WriteToSheets rs

rs.Close
cn.Close

End Sub

Private Sub WriteToSheets(ResultSet As ADODB.Recordset)

Dim ws As Worksheet
Dim i As Integer

Set ws = ThisWorkbook.Worksheets.Add

ws.Select

For i = 0 To ResultSet.Fields.Count - 1
ws.Cells(1, i + 1).Value = ResultSet.Fields(i).Name
  Next i

ws.Range("A2").CopyFromRecordset ResultSet

End Sub

Why is it that adding those few lines makes the code return no results onto the worksheet (though the field names are retirned)?

Thanks

From:	Andrew G
When:	19 Mar 20 at 08:17

Reply to Andrew G

Hi Duggie,

Here's the documentation for the GetRecords method you're using https://docs.microsoft.com/en-us/sql/ado/reference/ado-api/getrows-method-ado?view=sql-server-ver15

The important part is:

After you call GetRows, the next unread record becomes the current record, or the EOF property is set to True if there are no more records.

Rather than doing that, you can set your recordset to use a client side cursor and then just just the RecordCount property to determine how many rows you have retrieved:

Sub GetDataFromStoredProcedure()

Dim cn As ADODB.Connection
Dim rs As ADODB.Recordset

Set cn = New ADODB.Connection

cn.ConnectionString = _
"Provider=SQLNCLI11;Server=.\SQL2017;Database=Movies;Trusted_Connection=yes"

cn.Open

Set rs = New ADODB.Recordset

rs.ActiveConnection = cn
rs.Source = "spFilmList"
rs.CursorLocation = adUseClient
rs.Open

Debug.Print rs.RecordCount

If rs.RecordCount > 1000000 Then
'code to apply recordset filters
Else
WriteToSheets rs
End If

rs.Close
cn.Close

End Sub

Hope that helps!

From:	duggie
When:	08 Apr 20 at 10:16

Reply to duggie

Andrew,

Thanks for your suggestion.

Apologies for the delay in replying, been side tracked with job-hunting, successfully started but then cut owing to a certain worldwide incident!

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