RE: Oracle CBO question
- From: "Allen, Brandon" <Brandon.Allen@xxxxxxxxxxx>
- To: <jobmiller@xxxxxxxxx>, <Joel.Patterson@xxxxxxxxxxx>, <contactarul@xxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 5 Jul 2007 09:47:02 -0700
Yes, the tables are initially joined in order from lowest estimated
cardinality to highest, but there are probably at least a few exceptions
to this rule, such as queries with LEADING and ORDERED hints.
Regards,
Brandon
________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Job Miller
There is intelligence to the order of evaluation I assume, so the
options not considered I suspect are less likely to be better. not sure
about that though
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