| From: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
| Cc: | Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Allow an alias to be attached directly to a JOIN ... USING |
| Date: | 2019-09-17 20:14:04 |
| Message-ID: | defcc701-3c63-5c59-b527-03ba1a2f623c@2ndquadrant.com |
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| Thread: | |
| Lists: | pgsql-hackers |
On 2019-09-17 19:37, Alvaro Herrera wrote:
> On 2019-Aug-01, Thomas Munro wrote:
>
>> Indeed, that seems like a problem, and it's a good question. You can
>> see this on unpatched master with SELECT x.filler FROM
>> (pgbench_tellers AS t JOIN b USING (bid)) AS x.
>
> I'm not sure I understand why that problem is a blocker for this patch.
I tried to analyze the spec for what the behavior should be here, but I
got totally lost. I'll give it another look.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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