pgstattuple_approx for toasted table

From: Mariel Cherkassky <mariel(dot)cherkassky(at)gmail(dot)com>
To: PostgreSQL mailing lists <pgsql-performance(at)postgresql(dot)org>
Subject: pgstattuple_approx for toasted table
Date: 2019-03-03 15:59:56
Message-ID: CA+t6e1kTYbcQY4ohOS-OUvyu5T+=PTj_TZKvyMBeCS5V6V7ZFA@mail.gmail.com
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Hi,
I was testing pgstattuple and I realized that pgstattuple is working on
toasted table but pgstattuple_approx is raising the next error msg :

ERROR: "pg_toast_18292" is not a table or materialized view

ahm, is that because the pgstattuple_approx uses visibility map ? Can
someone explain ? tnx.

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