> I'm experiencing a particular problem using IBO and
> Firebird 1.5, my system is Delphi 7 with IBO 4.2I

...

> If the dates are hard coded then all works fine.
> Also, everything works fine when the same query population
> is used against Firebird 1.0

To quote an earlier posting...

You need to open the firebird.conf file in your Firebird root
directory, find the parameter #OldParameterOrdering = 0

Remove the '#' sign and change the zero (= false) to 1 (true).
Save firebird.conf, then stop and restart the server.

The reason for this is that 1.5 fixed a bug with parameter
ordering, that has been around forever in InterBase and
Firebird. IBO provides a workaround for the bug but, because
Fb 1.5 is still in beta, it doesn't yet provide a workaround
for the corrected behaviour!!


--
Geoff Worboys
Telesis Computing