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Re: query decorrelation in postgres

From: Itagaki Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp>
To: mahendra chavan <mahcha(at)gmail(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: query decorrelation in postgres
Date: 2009-07-24 01:02:25
Message-ID: (view raw or whole thread)
Lists: pgsql-hackers
mahendra chavan <mahcha(at)gmail(dot)com> wrote:

> I am a master's student in computer science at IIT Bombay. As part of my
> project, I need to get a decorrelated version of a SQL query.  Please could
> anyone let me know if we have query decorrelation feature implemented in
> postgres ?

What do you mean by "query decorrelation"? Is it an addtional method for
query optimization? At least there is no word 'decorrelation' in
the postgres documentation.

ITAGAKI Takahiro
NTT Open Source Software Center

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