Read about star schema execution plan. Regards,
Waleed -----Original Message----- Sent: Tuesday, March 26, 2002 4:26 PM To: Multiple recipients of list ORACLE-L Hi. I am tuning a query that runs against a star schema and a few dimension tables. The plan shows that the first step is two join two dimension tables via a cartesian join. Why would Oracle does that instead of joining the dimensions to the fact table one after another? Can anyone offer an explanation? thank you ===== __________________________________________________ Do You Yahoo!? Yahoo! Movies - coverage of the 74th Academy Awards(r) http://movies.yahoo.com/ -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Gene Gurevich INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Khedr, Waleed INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).