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how does USE_HASH hint work

marcoAug 7 2012 — edited Aug 7 2012
Hi all,

One of my sql request worked slowly, so I tried different ways to improve it and /*+ ORDERED USE_HASH(d) */ hint works just amazing. It's a pity, but I don't understand it. Could someone please explain me how does it work? I tried to google it, but can't find simple explanation.
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Locked on Sep 4 2012
Added on Aug 7 2012
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