Date: Sun, 18 Oct 2020 14:37:27 -0700 (MST)
From: pinker <pinker@onet.eu>
To: pgsql-bugs@postgresql.org
Message-ID: <1603057047424-0.post@n3.nabble.com>
In-Reply-To: <236292.1603052323@sss.pgh.pa.us>
References: <1603050466566-0.post@n3.nabble.com>
 <1603050580276-0.post@n3.nabble.com> <235509.1603051243@sss.pgh.pa.us>
 <1603051414438-0.post@n3.nabble.com> <236292.1603052323@sss.pgh.pa.us>
Subject: Re: Postgres 13 signal 11: Segmentation fault tested on 2
 independent machines
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cast to text those 2 columns helped:

sut.schemaname::TEXT, sut.relname::TEXT

so this function doesn't cause segmentation fault

CREATE OR REPLACE FUNCTION vacuum_dead_size(i_now timestamp with time zone,
OUT schemaname TEXT, OUT relname TEXT, OUT total_bytes NUMERIC, OUT
dead_tup_size NUMERIC)
RETURNS SETOF RECORD
AS $$

    WITH closest_metric_stat_user_tables AS (
        SELECT now FROM stat_user_tables ORDER BY abs(now-$1) LIMIT 1
    ), closest_metric_table_sizes AS (
        SELECT now FROM table_sizes ORDER BY abs(now - $1) LIMIT 1
    )
SELECT sut.schemaname::TEXT, sut.relname::TEXT, ts.total_bytes, 1::numeric
FROM stat_user_tables sut
         LEFT JOIN table_sizes ts ON ts.table_name = sut.relname AND
ts.table_schema = sut.schemaname
    WHERE ts.now = (SELECT now FROM closest_metric_table_sizes) AND sut.now
= (SELECT now FROM closest_metric_stat_user_tables)
ORDER BY 1;
$$ LANGUAGE SQL;


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