Sunday 24 June 2012

Ex19: VBA - Read table records using DAO

How to read the field names and types from a table or query.

Option Compare Database
Option Explicit

'Constants for examining how a field is indexed.
Private Const intcIndexNone As Integer = 0
Private Const intcIndexGeneral As Integer = 1
Private Const intcIndexUnique As Integer = 3
Private Const intcIndexPrimary As Integer = 7


Function ShowFieldsRS(strTable)
    'Purpose:   How to read the field names and types from a table or query.
    'Usage:     Call ShowFieldsRS("Table1")
    Dim rs As DAO.Recordset
    Dim fld As DAO.Field
    Dim strSql As String
    
    strSql = "SELECT " & strTable & ".* FROM " & strTable & " WHERE (False);"
    Set rs = DBEngine(0)(0).OpenRecordset(strSql)
    For Each fld In rs.Fields
        Debug.Print fld.Name, FieldTypeName(fld), "from " & fld.SourceTable & "." & fld.SourceField
    Next
    rs.Close
    Set rs = Nothing
End Function

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