Re: PoC/WIP: Extended statistics on expressions

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От Tomas Vondra
Тема Re: PoC/WIP: Extended statistics on expressions
Дата
Msg-id 4c98203c-8364-bb76-b502-d7b323ba55ba@enterprisedb.com
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Ответ на Re: PoC/WIP: Extended statistics on expressions  (Noah Misch <noah@leadboat.com>)
Ответы Re: PoC/WIP: Extended statistics on expressions  (Tom Lane <tgl@sss.pgh.pa.us>)
Re: PoC/WIP: Extended statistics on expressions  (Noah Misch <noah@leadboat.com>)
Список pgsql-hackers
On 6/6/21 7:37 AM, Noah Misch wrote:
> On Sat, Mar 27, 2021 at 01:17:14AM +0100, Tomas Vondra wrote:
>> OK, pushed after a bit more polishing and testing.
> 
> This added a "transformed" field to CreateStatsStmt, but it didn't mention
> that field in src/backend/nodes.  Should those functions handle the field?
> 

Yup, that's a mistake - it should do whatever CREATE INDEX is doing. Not
sure if it can result in error/failure or just inefficiency (due to
transforming the expressions repeatedly), but it should do whatever
CREATE INDEX is doing.

Thanks for noticing! Fixed by d57ecebd12.


regards

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



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