Hello expert, I have a table with 40 millions records and the last update date is indexed. But when we use the following where clause, it takes forever to run the report. WHERE TRUNC(last_update_date) = TRUNC(SYSDATE - 1) How to improve the performance? Do I need to create a new index field on the table with TRUNC(last_update_date)? ---------------------------------------------------------------- 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 -----------------------------------------------------------------