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Disk usage for intermediate results in join - Mailing list pgsql-hackers

From	Parul Lakkad
Subject	Disk usage for intermediate results in join
Date	March 11, 2014 14:25:01
Msg-id	CACmw6hSNjttk2uhP7KV-OWQ3Lv2KdeB8TdOva7J1EgMtLxzzug@mail.gmail.com Whole thread Raw
Responses	Re: Disk usage for intermediate results in join Re: Disk usage for intermediate results in join
List	pgsql-hackers

Hi,

I am trying to figure out when disk is used to store intermediate results while performing joins in postgres.

According my findings using 'explain analyse ' only merge sort uses disk.

Can anyone please throw some more light on this?

Thanks,
Parul

From: "MauMau"
Date: 11 March 2014, 14:12:27
Subject: Re: Is SPI safe to use in multi-threaded PL/Java?

From: Robert Haas
Date: 11 March 2014, 15:13:07
Subject: Re: [ISSUE] pg_dump: schema with OID 0 does not exist