Адаптация значения даты или времени к различным форматам SQL-сервера

Оформил: DeeCo
Автор: http://www.swissdelphicenter.ch

{ 
Wenn man mit verschiedensprachigen (MS-)SQL-Servern arbeitet, 
hat man ab und an das Problem, Datumswerte in ein fur den 
jeweiligen Server verstandliches Format umzuwandeln. 
}

 { 
If you work with different (MS-)SQL-Server, you have sometimes the 
problem what the date value is in the correct format. 
}


 function TForm1.GetSQLDateTimeFormat(UDL: string): string;
 begin
   Screen.Cursor := crSQLWait;
   if ADOConnection1.Connected then ADOConnection1.Close;
   ADOConnection1.ConnectionString := "FILE NAME=" + UDL;
   ADOQuery1.SQL.Clear;
   ADOQuery1.SQL.Add("sp_helplanguage @@LANGUAGE");
   Application.ProcessMessages;
   try
     try
       ADOQuery1.Open;
     except
       on E: Exception do MessageBox(Handle,
           PChar("Die Abfrage konnte nicht geoffnet werden:" + #13#10+#13#10+E.Message),
           PChar("Fehler!"), 16);
     end;
     if (ADOQuery1.Active) and (ADOQuery1.RecordCount > 0) then
       Result := ADOQuery1.FieldByName("dateformat").AsString;
   finally
     Screen.Cursor := crDefault;
   end;
 end;



 function DateTimeToSQLDateTimeString(Data: TDateTime; Format: string;
   OnlyDate: Boolean = True): string;
 var
   y, m, d, h, mm, s, ms: Word;
 begin
   DecodeDate(Data, y, m, d);
   DecodeTime(Data, h, mm, s, ms);
   if Format = "dmy" then
     Result := IntToStr(d) + "-" + IntToStr(m) + "-" + IntToStr(y)
   else if Format = "ymd" then
     Result := IntToStr(y) + "-" + IntToStr(m) + "-" + IntToStr(d)
   else if Format = "ydm" then
     Result := IntToStr(y) + "-" + IntToStr(d) + "-" + IntToStr(m)
   else if Format = "myd" then
     Result := IntToStr(m) + "-" + IntToStr(y) + "-" + IntToStr(d)
   else if Format = "dym" then
     Result := IntToStr(d) + "-" + IntToStr(y) + "-" + IntToStr(m)
   else
     Result := IntToStr(m) + "-" + IntToStr(d) + "-" + IntToStr(y); //mdy: ; //US 
  if not OnlyDate then
     Result := Result + " " + IntToStr(h) + ":" + IntToStr(mm) + ":" + IntToStr(s);
 end;



 //Example: 
//Beispiel: 

procedure ConvertSQLDateTime;
 begin
   ShowMessage(DateTimeToSQLDateTimeString(now, GetSQLLanguage("C:\DBEngl.udl")));
 end;

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