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[PATCH]-hash index improving
- From: "Xiao Meng" <mx(dot)cogito(at)gmail(dot)com>
- To: pgsql-hackers(at)postgresql(dot)org
- Cc: "Kenneth Marshall" <ktm(at)rice(dot)edu>, "Jonah H. Harris" <jonah(dot)harris(at)gmail(dot)com>
- Subject: [PATCH]-hash index improving
- Date: Thu, 17 Jul 2008 17:26:38 +0800
- Message-id: <ded849dd0807170226h7c8df076p77aa0a3f86713add@mail.gmail.com> <text/plain>
The patch store hash code only in the index tuple. It based on Neil Conway's patch with an old version of PostgreSQL. It passes the regression test but I didn't test the performance yet. Anyone interested can make a performance test;-) You can undefine the macro HASHVALUE_ONLY in hash.h to get the original implementation. It's a preliminary implementation and I'm looking for input here. Hope to hear from you. -- Best Regards, Xiao Meng DKERC, Harbin Institute of Technology, China Gtalk: mx(dot)cogito(at)gmail(dot)com MSN: cnEnder(at)live(dot)com http://xiaomeng.yo2.cn
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