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Re: pg_stats and range statistics

Tomas Vondra <tomas.vondra@enterprisedb.com>

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From: Tomas Vondra <tomas.vondra@enterprisedb.com>
To: Egor Rogov <e.rogov@postgrespro.ru>, pgsql-hackers@lists.postgresql.org
Date: 2021-06-18T20:31:43Z
Lists: pgsql-hackers 
On 6/18/21 6:22 PM, Egor Rogov wrote:
> Hi,
> 
> Statistics for range types are not currently exposed in pg_stats view 
> (i.e. STATISTIC_KIND_RANGE_LENGTH_HISTOGRAM and 
> STATISTIC_KIND_BOUNDS_HISTOGRAM).
> 
> Shouldn't they? If so, here is a patch for adding them.
> 

I think they should be exposed - I don't see why not to do that. I 
noticed this when working on the count-min sketch experiment too, so 
thanks for this patch.

FWIW I've added the patch to the next CF:

https://commitfest.postgresql.org/33/3184/


regards

-- 
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Collect and use histograms of lower and upper bounds for range types.