RE: 4 join methods?

Search this page for the word "hash", you will find a good article on hash joins.

http://www.itsystems.lv/gints/files/oracle/oracle.htm

• Ethan Post

-----Original Message-----
Sent: Thursday, May 31, 2001 4:57 AM
To: Multiple recipients of list ORACLE-L

Where can I get the documentation for join methods ?

rukmini
----- Original Message -----
To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Thursday, May 31, 2001 3:45 PM

> At 22:55 -0800 30/5/01, Rukmini Devi wrote:
> >1. Equi-join 2. Self-join 3. Outer-join 4. Hash-join
>
> Outer join is a logical type not an access method.
>
> the four types of join that Oracle can use:
>
> Nested Loops join
> Sort Merge join (equi-join only)
> Cluster join (equi-join on cluster key only)
> Hash join (equijoin, cost-based only)
>
> Regards
>
> Paul Miller
> --
> -
> Carib Data Limited
>
> <mailto:millerp_at_caribdata.co.uk>
> <http://www.caribdata.co.uk>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: PD Miller
> INET: millerp_at_caribdata.co.uk
>
> 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: ListGuru_at_fatcity.com (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: Rukmini Devi
  INET: rukmini_at_indbrain.com

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: ListGuru_at_fatcity.com (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).

------------------------------------------------------------------------------
This e-mail is intended for the use of the addressee(s) only and may contain 
privileged, confidential, or proprietary information that is exempt from disclosure 
under law.  If you have received this message in error, please inform us promptly by 
reply e-mail, then delete the e-mail and destroy any printed copy.   Thank you.

==============================================================================
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Post, Ethan
  INET: epost_at_kcc.com

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: ListGuru_at_fatcity.com (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).