From: Tom Lane <tgl@sss.pgh.pa.us>
To: thibaut.madelaine@dalibo.com
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #15669: Error with unnest in PG 11 (ERROR: 0A000)
Date: Tue, 05 Mar 2019 10:39:07 -0500
Message-ID: <19353.1551800347@sss.pgh.pa.us> (raw)
In-Reply-To: <15669-02fb3296cca26203@postgresql.org>
References: <15669-02fb3296cca26203@postgresql.org>
PG Bug reporting form <noreply@postgresql.org> writes:
> In PostgreSQL 10.7 and before, it is possible to run the following query:
> thibaut=# WITH test AS ( SELECT array[1,2] AS intarr )
> SELECT unnest(intarr) AS lot_id FROM test WHERE false;
> In version 11.2, the same query fails:
> ERROR: 0A000: set-valued function called in context that cannot accept a set
Hmm, that's definitely a bug. It looks like we're forgetting to make
a ProjectSet plan node for the unnest() if we realize that the query
is a no-op; but I'm not sure why 10.x doesn't have the same issue.
Digging ...
regards, tom lane
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To: pgsql-bugs@postgresql.org
Cc: tgl@sss.pgh.pa.us, thibaut.madelaine@dalibo.com, pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #15669: Error with unnest in PG 11 (ERROR: 0A000)
In-Reply-To: <19353.1551800347@sss.pgh.pa.us>
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