Re: [GENERAL] unnest-like pg_stats.most_common_values and pg_stats.most_common_freqs

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От Luca Ferrari
Тема Re: [GENERAL] unnest-like pg_stats.most_common_values and pg_stats.most_common_freqs
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Msg-id CAKoxK+6BN7BSVKg-aZdFmEMutP+QbyuwN4pftS89ohB-zHTyRw@mail.gmail.com
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Ответ на Re: [GENERAL] unnest-like pg_stats.most_common_values andpg_stats.most_common_freqs  (Justin Pryzby <pryzby@telsasoft.com>)
Ответы Re: [GENERAL] unnest-like pg_stats.most_common_values and pg_stats.most_common_freqs  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-general
On Fri, Nov 17, 2017 at 9:41 PM, Justin Pryzby <pryzby@telsasoft.com> wrote:
> I think you want something like this ?
>
> postgres=# SELECT schemaname, tablename, attname, unnest(histogram_bounds::text::text[]), histogram_bounds FROM
pg_statsLIMIT 9;
 
>  pg_catalog | pg_pltemplate | tmplname    | plperl              |
{plperl,plperlu,plpgsql,plpython2u,plpython3u,plpythonu,pltcl,pltclu}

I don't think it is what I'm looking for, I would like something ,like:
select unnest( histogram_bounds::text::text[] ), unnest(
most_common_freqs ) from pg_stats

but with correlation between the two array indexes. Is it something
achievable in SQL? Or should I use a plpgsql loop with an index?

Luca


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