Re: Actual rows significantly more than estimated during many joins

From: Andrew Beverley <andy(at)andybev(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: Actual rows significantly more than estimated during many joins
Date: 2016-06-04 12:18:58
Message-ID: 20160604131858.74ce49cb6698475f9984b771@andybev.com
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On Sat, 4 Jun 2016 Andrew Beverley <andy(at)andybev(dot)com> wrote:
> When I run EXPLAIN ANALYZE, I see that the actual query is scanning
> significantly more rows for the join than was estimated. There is also
> a huge number of loops for the joins. Why is this, and is there an
> easy fix?

I should have said: PostgreSQL version 9.4.6 running on Debian 8.4

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