Databases Reference
In-Depth Information
Dim db As DATABASE
Dim rsTable As Recordset
Dim rsDyna As Recordset
Dim rsSnap As Recordset
Set db = CurrentDb
' Open table-type recordset
Set rsTable = db.OpenRecordset("Books")
Debug.Print "TableCount: " & rsTable.RecordCount
' Open dynaset-type recordset
Set rsDyna = db.OpenRecordset("Books", dbOpenDynaset)
Debug.Print "DynaCount: " & rsDyna.RecordCount
rsDyna.MoveLast
Debug.Print "DynaCount: " & rsDyna.RecordCount
' Open snapshot-type recordset
Set rsSnap = db.OpenRecordset("Books", dbOpenSnapshot)
Debug.Print "SnapCount: " & rsSnap.RecordCount
rsSnap.MoveLast
Debug.Print "SnapCount: " & rsSnap.RecordCount
' Close all
rsTable.Close
rsDyna.Close
rsSnap.Close
End
Sub
16.2.2 Default Recordset Types
If you do not specify a type in the
OpenRecordset
method, Jet will choose one for you
according to the following rules:
The default
Type
when opening a recordset on a
Database
object (first syntax) or
a
TableDef
object (second syntax) is a table-type
Recordset
object.
•
The default
Type
when opening a recordset on a
QueryDef
object is a dynaset-
type
Recordset
object. (Table-type recordsets are not available.)
•
The default
Type
when opening a recordset on an existing table-type
Recordset
object is a dynaset-type recordset. If the recordset is not table-type, then the new
recordset has the same type as the original.
•
16.3 Moving Through a Recordset
All recordsets have a
current position
(pointed to by the
current record pointer
) and a
current record
. Normally, the current record is the record at the current position.
However, there are two exceptions. The current position can be:
Before
the first record
•
After
the last record
•
