> then, at a minimum, Oracle MUST FTS the driving table. That's because there are no filter predicates. If the statement looked something like: Just a small out-of-context comment: CBO can decide to use index for full scans without filter predicates as well, in case all required columns exist in an index and fast full scan can be used... Tanel. ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------