read the docs. otn.oracle.com click on search. do a search for hash join.
The docs are very good. read them. ----- Original Message ----- To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: Thursday, January 15, 2004 8:34 AM > Dear all, > > I understand join is for joining two tables, I know nested loops and > sort-merge joins and I know how they work and on what situation they're > used best at. But I really don't understand hash join, how are they > working to join tables and on what situation they performed best? And > based on what does Oracle use hash join for joining tables in the > execution plan? If they use hash value, how does Oracle determine the > hash value when performing hash join? > I really in the dark here, please give me some light., Thank you all in > advance. > > Regards, > > Wendry > > > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: Wendry > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > 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.net -- Author: Ryan INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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).
