ACC2000: New SQL Records Appear Deleted Until Recordset Reopened

When you add a record to an SQL table using Visual Basic for Applications, if the table's unique index field has a default value, and you do not assign a value to that field, the new record appears deleted until you reopen the SQL table. If you try to obtain a value from the new record, you receive the following error message:

To resolve this behavior, when you open the SQL table by using Visual Basic code, include the dbSeeChanges option, as in the following example: The dbSeeChanges option ensures that any newly added records that contain a default value in the unique index field are available in the current recordset.

Microsoft provides programming examples for illustration only, without warranty either expressed or implied. This includes, but is not limited to, the implied warranties of merchantability or fitness for a particular purpose. This article assumes that you are familiar with the programming language that is being demonstrated and with the tools that are used to create and to debug procedures. Microsoft support engineers can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific requirements.

Steps to Reproduce Behavior

NOTE: The sample code in this article uses Microsoft Data Access Objects. For this code to run properly, you must reference the Microsoft DAO 3.6 Object Library. To do so, click References on the Tools menu in the Visual Basic Editor, and make sure that the Microsoft DAO 3.6 Object Library check box is selected.

1. Create a module and type the following line in the Declarations section if it is not already there:
   Option Explicit
2. Type the following procedure:

   Function TestSQLData()
   
      Dim db As DAO.Database, rs As DAO.Recordset
      Dim idx, td
      Dim cmd As String
   
      ' Delete TestTable if it exists on the SQL server.
      
      'Insert your database name, user ID, password (if any), and dsn
      'to point to an ODBC data source.
      Set db = OpenDatabase("<MyDatabase>", False, False, _
      "ODBC, Database = <MyDatabase>, UID = <userid>, PWD = <password>, dsn = <MyDSN>")
      cmd = "if exists (select * from sysobjects where" _
         & " id = object_id('dbo.TestTable'))"
      cmd = cmd & " drop table TestTable"
      db.Execute cmd, dbSQLPassThrough
   
      ' Create TestTable with one field on SQL server.
      Set td = db.CreateTableDef("TestTable")
      td.Fields.Append td.CreateField("Int", dbInteger)
      td.Fields.Append td.CreateField("String", dbText, 50)
      db.TableDefs.Append td
   
      Set idx = td.CreateIndex("MyIdx")
      idx.Unique = True
      idx.Fields.Append idx.CreateField("Int")
      td.Indexes.Append idx
   
      cmd = "create Default TestDef3 as 100"
      db.Execute cmd, dbSQLPassThrough
   
      cmd = "sp_bindefault TestDef3, 'TestTable.Int'"
      db.Execute cmd, dbSQLPassThrough
   
      ' Open table, add a record, and then obtain values.
      Set rs = db.OpenRecordset("TestTable")
      rs.AddNew
      rs!String = "Trial"
      rs.Update
   
      Debug.Print "RecordCount = " & rs.RecordCount
      rs.MoveFirst
      Debug.Print "String is " & rs("String")
      Debug.Print "Int is " & rs("Int")
      rs.Close
   
   End Function
   					

3. To test this function, type the following line in the Immediate window, and then press ENTER:
   ? TestSQLData()
   Note that the run-time error 3167 occurs.