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[PATCH]-hash index improving - Mailing list pgsql-hackers

From Xiao Meng
Subject [PATCH]-hash index improving
Date
Msg-id ded849dd0807170226h7c8df076p77aa0a3f86713add@mail.gmail.com
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Responses Re: [PATCH]-hash index improving  ("Jonah H. Harris" <jonah.harris@gmail.com>)
Re: [PATCH]-hash index improving  (Alvaro Herrera <alvherre@commandprompt.com>)
Re: [PATCH]-hash index improving  ("Jonah H. Harris" <jonah.harris@gmail.com>)
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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.cogito@gmail.com
MSN: cnEnder@live.com
http://xiaomeng.yo2.cn
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