--- In firebird-support@yahoogroups.com, "Adam" wrote:

> Well I don't think generators are particularly useful here. If two
> people run the query at the same time, the numbers are likely to be
> skipped or reset to 0 in the middle, and that is not really the
> point of generators.
>
> I am not aware of anyway you can do it in FB 1.5 without using a
> stored procedure. (Which is a pretty easy operation)

If each record is unique and the result set ordered, then it it
possible, although it will be pretty slow in many cases and could
leave the SQL almost unreadable if many records are required to
determine uniqueness:

select
(select count(*)
from TableA T2
where T2.field1 < T1.Field1
or (T2.field1 = T1.field1 and T2.field2<=T1.field2) as LineNr,
T1.field1, T1.field2
from TableA T1
order by T1.field1, T1.field2

Though I would only do this if the code is generated on the fly, using
a stored procedure is much better if the query isn't dynamically created.

Set