Re: Determine size of table before it's committed?

On Wed, Oct 11, 2017 at 9:43 AM, Seamus Abshere <seamus(at)abshere(dot)net> wrote:

> hi,
>
> I've had an `INSERT INTO x SELECT FROM [...]` query running for more
> then 2 days.
>
> Is there a way to see how big x has gotten? Even a very rough estimate
> (off by a gigabyte) would be fine.
>
> Best,
> Seamus
>
>
> --
> Seamus Abshere, SCEA
> https://www.faraday.io
> https://github.com/seamusabshere
> https://linkedin.com/in/seamusabshere
>
>
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>Is there a way to see how big x has gotten?...

Try:

SELECT n.nspname as schema,
c.relname as table,
a.rolname as owner,
c.relfilenode as filename,
c.reltuples::bigint,
pg_size_pretty(pg_relation_size(n.nspname|| '.' || c.relname)) as
size,
pg_size_pretty(pg_total_relation_size(n.nspname|| '.' || c.relname))
as total_size,
pg_relation_size(n.nspname|| '.' || c.relname) as size_bytes,
pg_total_relation_size(n.nspname|| '.' || c.relname) as
total_size_bytes,
CASE WHEN c.reltablespace = 0
THEN 'pg_default'
ELSE (SELECT t.spcname
FROM pg_tablespace t WHERE (t.oid = c.reltablespace)
)
END as tablespace
FROM pg_class c
JOIN pg_namespace n ON (n.oid = c.relnamespace)
JOIN pg_authid a ON ( a.oid = c.relowner )
WHERE relname = 'x'
ORDER BY total_size_bytes DESC, 1, 2;

--
*Melvin Davidson*
I reserve the right to fantasize. Whether or not you
wish to share my fantasy is entirely up to you.