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BUG #14614: Combination of UNION, EXCEPT and ORDER BY produces an error

From: sean(dot)johnston(at)edgeintelligence(dot)com
To: pgsql-bugs(at)postgresql(dot)org
Subject: BUG #14614: Combination of UNION, EXCEPT and ORDER BY produces an error
Date: 2017-04-07 11:58:08
Message-ID: 20170407115808.25934.51866@wrigleys.postgresql.org (view raw, whole thread or download thread mbox)
Thread:
Lists: pgsql-bugs
The following bug has been logged on the website:

Bug reference:      14614
Logged by:          Sean Johnston
Email address:      sean(dot)johnston(at)edgeintelligence(dot)com
PostgreSQL version: 9.6.2
Operating system:   Debian 7.11
Description:        

STATEMENT:  ( ( select 1,2,3 ) union ( select 4,5,6 order by 1,2 ) order by
1,2 ) except ( select 4,5,6 ) order by 1,2;
ERROR:  no relation entry for relid 0

Removing the middle order by works:

STATEMENT:  ( ( select 1,2,3 ) union ( select 4,5,6 order by 1,2 ) ) except
( select 4,5,6 ) order by 1,2;
 ?column? | ?column? | ?column? 
----------+----------+----------
        1 |        2 |        3
(1 row)



Responses

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Next:From: Tom LaneDate: 2017-04-07 16:19:19
Subject: Re: BUG #14614: Combination of UNION, EXCEPT and ORDER BY produces an error
Previous:From: Dave PageDate: 2017-04-07 08:04:08
Subject: Re: BUG #14611: Black screen when launching pgadmin4

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