I really like the coalesce function. But in many cases it doesn't help
me because it only works with null-values, not empty strings.

Therefore I changed the code like this:

procedure TEDBExprEvaluator.EvaluateCOALESCE(Token: TEDBExprToken);
var
  I: Integer;
begin
  with Token do
  begin
    Value.Null := True;
    for I := 0 to NumArguments - 1 do
    begin
      EvaluateNextToken(ArgumentTokens[I]);
      // if (not ArgumentTokens[I].Value.Null) then  <------------OLD
      if  ArgumentTokens[I].Value.AsString <> '' then  <---------NEW
      begin
        Value.Assign(ArgumentTokens[I].Value, False);
        Break;
      end;
    end;
  end;
end;

Is that ok or have I to be scared of any problems in the future?

Thanks Uli.

Uli,

<< Is that ok or have I to be scared of any problems in the future? >>

Well, apart from every new release putting it back the way it was, no.

--
Tim Young
Elevate Software
www.elevatesoft.com

Tim

> Well, apart from every new release putting it back the way it was, no.

That's exactly what I thought. If I forget the change it can turn out to
backfire

Regards Uli

Tim


And what about when emptystring = null again?

Roy Lambert

Roy,

<< And what about when emptystring = null again? >>

It's on the list.  As I said, I'm a little under the weather this week, so
things are progressing slowly this week.

--
Tim Young
Elevate Software
www.elevatesoft.com

Tim


Ah yes, I know the cold problem well. Mind feels like its wrapped in cotton wool, things don't make sense, its difficult to remember and often everything feels such an effort.

I'm glad you're enjoying yourself

However, the post wasn't a reminder, more a "is this mod going to be needed when" question.

Roy Lambert

Roy,

<< However, the post wasn't a reminder, more a "is this mod going to be
needed when" question. >>

Ahh, sorry.  No, this mod wouldn't be needed in such a case.

--
Tim Young
Elevate Software
www.elevatesoft.com