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Tip of the Day
Language: VB
Expertise: Intermediate
Mar 22, 2006

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Retrieve Records from a Supplied SQL Statement

To retrieve the required field from the table based on the supplied condition, use the following code:

Function GetQueryResults(strSql As String, Optional ReadOnly As Boolean = True) _
As Recordset
   Dim rstQueryResult As Recordset
   Set rstQueryResult = New Recordset
   
   strSql = GetQueryString(strSql)
   rstQueryResult.CursorLocation = adUseClient
   ' gCnn is the Connection Object
   rstQueryResult.Open strSql, gCnn, IIf(ReadOnly, adOpenStatic, adOpenKeyset), _
IIf(ReadOnly, adLockReadOnly, adLockOptimistic)
   Set GetQueryResults = rstQueryResult
   Set rstQueryResult = Nothing
End Function


Function GetFieldfromTable(TblName As String, FldName As String, Optional Cond As String = "") _
   As String
' Input     : TblName - Name of the table from which Field has to be retrieved
' FldName - Name of the Field to be retrieved
' Cond - Condition basis to retrieve field   
   Dim rst As Recordset
   Dim strSql As String
   GetFieldfromTable = ""
   strSql = "Select " & FldName & " FROM " & TblName & IIf(Cond <> "", " WHERE " & Cond, "")
   Set rst = GetQueryResults(strSql)
   With rst
      If Not (.EOF Or .BOF) Then
         If Not IsNull(.Fields(0)) Then GetFieldfromTable = .Fields(0)
      End If
   End With
   Set rst = Nothing
End Function
Syed Mohamed
 
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