The information in this article applies to:
- Microsoft Visual Basic Learning, Professional, and Enterprise Editions
for Windows, version 5.0
- Microsoft Visual Basic Standard, Professional, and Enterprise Editions,
16-bit and 32-bit, for Windows, version 4.0
SYMPTOMS
The Name property of a DAO Recordset object is limited to 256 characters.
It only reports the first 256 characters of the SQL statement used to
create the new Recordset. If the SQL statement is longer than 256
characters, and you refresh the Data Control in the code later on, you will
receive one of the following errors:
"Run-time error '3061': Too few parameters. Expected 1."
"Run-time error '3075': Syntax error in string in query expression
'xxxx'."
CAUSE
When you set the Data Control's Recordset property to an existing
Recordset, it obtains its RecordSource property from the DAO Recordset's
Name property, which allows a maximum length of 256 characters.
RESOLUTION
Store the SQL statement into a string variable. Before refreshing the Data
Control, set its RecordSource Property to this variable. For example:
Data1.RecordSource = SQLStr
Data1.Refresh
STATUS
This behavior is by design.
MORE INFORMATION
Steps to Reproduce Behavior
- Start a new project in Visual Basic. Form1 is created by default.
- Add a Data Control(Data1) and a CommandButton (Command1) to Form1.
- In the Click event of Command1, place the following code:
Private Sub Command1_Click()
Dim DB As Database, RS As Recordset
Dim SQLStr As String
Set DB = DBEngine.Workspaces(0).OpenDatabase("Biblio.MDB")
'This SQL Statement cause Run-time error 3075.
SQLStr = "Select PubID, Name, [Company Name], Address, " _
& "City, State, PubID, Name, [Company Name], Address, City, " _
& "State, PubID, Name, [Company Name], Address, City, State, " _
& "PubID, Name, [Company Name], Address, City, State " _
& "from Publishers Where PubID = 2 and State = 'MA'"
'This SQL Statement cause Run-time error 3061.
'SQLStr = "Select PubID, Name, [Company Name], Address, City, " _
' & "State, PubID, Name, [Company Name], Address, City, State, " _
' & "PubID, Name, [Company Name], Address, City, State, " _
' & "PubID, Name, [Company Name], Address, City, State, " _
' & "PubID from Publishers Where PubID = 2 and State = 'MA'"
Set RS = DB.OpenRecordset(SQLStr, dbOpenDynaset)
Set Data1.Recordset = RS
Debug.Print RS.Name
Debug.Print Data1.RecordSource
Data1.Refresh
End Sub
- Start the program by pressing the F5 key.
- Click the Command1 button to execute the code. You will receive one of
the errors listed above.
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