Re: POC: GROUP BY optimization - Mailing list pgsql-hackers

From Tomas Vondra
Subject Re: POC: GROUP BY optimization
Date
Msg-id 217ab546-4c78-9364-9282-a6dcefa066ea@enterprisedb.com
Whole thread Raw
In response to Re: POC: GROUP BY optimization  ("Jonathan S. Katz" <jkatz@postgresql.org>)
Responses Re: POC: GROUP BY optimization
List pgsql-hackers

On 8/30/22 15:15, Jonathan S. Katz wrote:
> On 8/18/22 3:29 AM, Tomas Vondra wrote:
>>
>>
>> On 8/18/22 03:32, David Rowley wrote:
> 
>>> Here are a couple of patches to demo the idea.
>>>
>>
>> Yeah, that's an option too. I should have mentioned it along with the
>> cpu_operator_cost.
>>
>> BTW would you mind taking a look at the costing? I think it's fine, but
>> it would be good if someone not involved in the patch takes a look.
> 
> With RMT hat on, just a friendly reminder that this is still on the open
> items list[1] -- we have the Beta 4 release next week and it would be
> great if we can get this resolved prior to it.
> 

I know. I'll fix this by tweaking one of the cost gucs, mentioned by David.


regards

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



pgsql-hackers by date:

Previous
From: Richard Guo
Date:
Subject: Re: [POC] Allow flattening of subquery with a link to upper query
Next
From: Christoph Berg
Date:
Subject: Re: plpgsql-trigger.html: Format TG_ variables as table (patch)