From: Tom Lane <tgl@sss.pgh.pa.us>
To: Simon Riggs <simon@2ndquadrant.com>
Cc: pgsql-hackers@postgresql.org
Subject: Re: [COMMITTERS] pgsql: If we expect a hash join to be performed in multiple batches,
Date: Thu, 02 Apr 2009 15:49:59 -0400
Message-ID: <20202.1238701799@sss.pgh.pa.us> (raw)
In-Reply-To: <1238692283.5444.123.camel@ebony.2ndQuadrant>
References: <20090326171535.6B9BF754ADE@cvs.postgresql.org>
<1238692283.5444.123.camel@ebony.2ndQuadrant>
Simon Riggs <simon@2ndquadrant.com> writes:
> Can we add "batches=N" to the EXPLAIN output for Hash and/or Hash Join?
Are you talking about expected batches, or actual batches? If the
former, would it be sufficient to distinguish "1" from "more than 1"?
If so, maybe changing the node title to "Batched Hash" would do.
regards, tom lane
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To: pgsql-committers@postgresql.org
Cc: tgl@sss.pgh.pa.us, simon@2ndquadrant.com, pgsql-hackers@postgresql.org
Subject: Re: [COMMITTERS] pgsql: If we expect a hash join to be performed in multiple batches,
In-Reply-To: <20202.1238701799@sss.pgh.pa.us>
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