Oracle FAQ | Your Portal to the Oracle Knowledge Grid |
Home -> Community -> Mailing Lists -> Oracle-L -> Costs in explain plan
Hi,
Can you compare the costs that are displayed in explain plan output? For example, I have a query that contains a merge join. The cost reported in the explain plan is 134. By including a hint to use a nested loop instead, the cost becomes 1160. Does this mean the merge join plan is more efficient, despite generally being considered a less efficient join method than a NL?
Thanx
-a
This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses.
www.mimesweeper.com
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Liststo: 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 Wed Dec 12 2001 - 00:55:33 CST
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message