> After executing a DSQL SELECT, a call to isc_dsql_sql_info() returns 0
> for the isc_info_req_select_count value. However, a call to
> isc_dsql_sql_info() after the subsequent isc_dsql_fetch() returns a
> value indicating the row number in the result set being fetched.
> Since, isc_dsql_fetch() performs sequential access, this value is
> always exactly one greater than the previous call.
>
> For my purposes, this is not very useful information.
>
> Is this intentional?

Yes.

> Is there any way after a SELECT has been
> executed to obtain the number of rows in the result set (without
> fetching each one)?

No, because in most cases (depends on the plan) the resultset
is not prepared during execute, but is created on the fly during fetches.

Ivan
http://www.volny.cz/iprenosil/interbase/