index range scan and index full scan
668822Jan 22 2009 — edited Jan 22 2009
i always think about what is the difference between index range scan and index full scan..
index full scan scans the full index structure that is leaf, block and root.
how does index range scan work internally?? how it is different from index full scan?? when to use index range scan?? which is costly???
i fond some docs on these, but no one discuss internals.. anyone know about any link that j. lewis written about these scans??
will be helpfull
thanks and regards