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RE: selectivity of predicates with LIKE - diff between 8i and 9i

From: Boris Dali <boris_dali_at_yahoo.ca>
Date: Wed, 11 Jun 2003 10:40:05 -0700
Message-ID: <F001.005AF530.20030611102502@fatcity.com>


Thanks, KG

No, CURSOR_SHARING is not set (meaning it defaults to EXACT on both 8i and 9i)

No bind variables. The query given with ... LIKE 'LOVE%' is the real one

Yes, I can try setting _LIKE_WITH_BIND_AS_EQUALITY.

One additional piece of info - we don't have OPTIMIZER_INDEX_* parameter set on eigher one (I should re-read Tim's excellent paper). It would probably be a safer bet to change "supported" parameters first (after understanding what is different in 9i that is), but I am not sure what effect it might have on the rest of the app.

Cheers,
Boris.


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Received on Wed Jun 11 2003 - 12:40:05 CDT

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