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.

Thanks