Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

ADP - Must Declare the Scalar Varaible

Posted on 2007-11-22
6
Medium Priority
?
948 Views
Last Modified: 2013-12-05
I am having difficulty with a ADP project, specifically regarding ADO / SQL usage.

I'm currently in the process of writing a function to return a resultset from a SQL table (SQL Server 2005), the code is fairly simple (see attached example).

The problem line looks to be: "Set rs_ = .Execute"... it throws the following error: "Must Declare the Scalar Variable @id".

I have tried to use '?' marks instead, but no luck; does anyone have any ideas (short of creating a stored procedure!).

Cheers
Function Example()
On Error GoTo ErrorHandler:
 
Dim command_ As New ADODB.Command
Dim rs_ As ADODB.Recordset
 
    With command_
    
        .ActiveConnection = CurrentProject.Connection
        .NamedParameters = True
        .CommandType = adCmdText
        .CommandText = "SELECT t.* FROM ticket t WHERE t.id = @id"
        
        .Parameters.Append .CreateParameter("@id", adInteger, adParamInput, , 11)
        
        Set rs_ = .Execute
        
        With rs_
        
            If .State = adStateOpen Then
            
                ' TODO: this bit!
            
            End If
        End With
    End With
    
Tidy:
 
    Set command_ = Nothing
    Set rs_ = Nothing
    
Exit Function
ErrorHandler:
 
    Debug.Print Err.Description: GoTo Tidy
 
End Function

Open in new window

0
Comment
Question by:MISLtd
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
6 Comments
 
LVL 22

Expert Comment

by:Kelvin Sparks
ID: 20333437
Replace "SELECT t.* FROM ticket t WHERE t.id = @id"

with

"SELECT t.* FROM ticket t WHERE t.id = " & the vale for @ID.

IF @ID is text then

"SELECT t.* FROM ticket t WHERE t.id = '" & @ID & "'"
0
 
LVL 1

Author Comment

by:MISLtd
ID: 20333538
While that would work, it leaves things a fairly open to SQL injection attacks as the @id parameter will be generated by user input.
0
 
LVL 22

Expert Comment

by:Kelvin Sparks
ID: 20333549
OK, but you haven't said where @ID is coming from. What you have in the adp is a statement that will be executed. Using ADO you have to pass these parameters in from somewhere.

You are using adCmdText. This just executes the string you create
0
 
LVL 1

Author Comment

by:MISLtd
ID: 20333617
I gave the '?' mark another go and seem to have solved the problem.
Function Example()
On Error GoTo ErrorHandler:
 
Dim command_ As New ADODB.Command
Dim rs_ As ADODB.Recordset
 
    With command_
    
        .ActiveConnection = CurrentProject.Connection
        .NamedParameters = True
        .CommandType = adCmdText
        .CommandText = "SELECT t.* FROM ticket t WHERE t.id = ?"
        
        .Parameters.Append .CreateParameter("id", adInteger, adParamInput, , 11)
        
        Set rs_ = .Execute
        
        With rs_
        
            If .State = adStateOpen Then
            
                ' TODO: this bit!
            
            End If
        End With
    End With
    
Tidy:
 
    Set command_ = Nothing
    Set rs_ = Nothing
    
Exit Function
ErrorHandler:
 
    Debug.Print Err.Description: GoTo Tidy
 
End Function

Open in new window

0
 
LVL 1

Accepted Solution

by:
Computer101 earned 0 total points
ID: 21641033
PAQed with points refunded (500)

Computer101
EE Admin
0

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article shows how to get a list of available printers for display in a drop-down list, and then to use the selected printer to print an Access report or a Word document filled with Access data, using different syntax as needed for working with …
Windocks is an independent port of Docker's open source to Windows.   This article introduces the use of SQL Server in containers, with integrated support of SQL Server database cloning.
Viewers will learn how the fundamental information of how to create a table.
Viewers will learn how to use the SELECT statement in SQL and will be exposed to the many uses the SELECT statement has.
Suggested Courses

618 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question