RE: hash join order

From: MacGregor, Ian A. <ian_at_SLAC.Stanford.EDU>
Date: Thu, 23 Aug 2001 21:26:57 -0700
Message-ID: <F001.003767BE.20010823212524@fatcity.com>

I cannot peoclaim it with absolute authority not being privy to Oracle internals; however it would make sense to hash the table b_tab.

Ian MacGregor
Stanford Linear Accelerator Center
ian_at_slac.stanford.edu

-----Original Message-----
Sent: Thursday, August 23, 2001 6:35 PM
To: Multiple recipients of list ORACLE-L

Does anyone know how the operation below is performed? Which object has the hashtable built on it and which object performs the lookup against the hashtable once it's built?

| Operation                                      |  Name              |
-----------------------------------------------------------------------
|   0    SELECT STATEMENT                        |                    |
|   1  0 HASH JOIN                               |                    |
|   2  1  TABLE ACCESS FULL                      |B_TAB               |
|   3  1  INDEX FAST FULL SCAN                   |PK_A_TAB            |
-----------------------------------------------------------------------

--

Please see the official ORACLE-L FAQ: http://www.orafaq.com
--

Author: Steve Rospo
  INET: srospo_at_watchmark.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).
--

Please see the official ORACLE-L FAQ: http://www.orafaq.com
--

Author: MacGregor, Ian A.
  INET: ian_at_SLAC.Stanford.EDU

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). Received on Thu Aug 23 2001 - 23:26:57 CDT