--- In firebird-support@yahoogroups.com, "callmefreud2" <rikki@...> wrote:

>
> We have a query that is fast in the FB 2.0 RC version, but in 2.0 and
> 2.1 takes 20 minutes. Essentially it deletes all records from a table
> in a master detail relationship.
> something like delete from detailTable where not exists (select distict
> masterTable.ID from masterTable where mastertableID = detailTable.FK)
>
> Does anyone know what might have changed significantly after that RC
> version? And will it / can it be fixed.

Should you not have a foreign key constraint on these fields? If you
did, it would be impossible for any such records to exist.

Adam