Hi
I'm looking for docs that explain tuning of SQL statements. But, no stories
about latches, buffers, TKPROF, blocks, V$ views... Just simple (or
advanced?) tips on:
- ordering of tables in FROM part of select (where goes the largest table,
and where to put the smallest table), and why is it so,
- if i have multiple ANDed conditions, in where part of select, where to
put the most restrictive, at the left end or at the right end? How does
oracle evaluates ANDed and ORed list, from left to right or counterwise?
- aditional tips: how to avoid OR and use AND instead, how to make query to
use index, tips on EXISTS, NOT IN...
Before diving into V$ stuff, I want do try simple query rewriting.
Thanks in advance
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Author: DKTS
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