Horton

Re: BUG #17811: Replacing an underlying view breaks OLD/NEW tuple when accessing it via upper-level view

Alexander Law <exclusion@gmail.com>

View thread View on postgr.es
From: Alexander Lakhin <exclusion@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-bugs@lists.postgresql.org
Date: 2023-03-08T06:00:00Z
Lists: pgsql-bugs 
07.03.2023 21:43, Tom Lane wrote:
> I've looked into this a bit more, and both of these symptoms reduce
> to the same thing: after we've plugged the modified view's query
> into the upper query, we have an RTE_SUBQUERY RTE whose eref->colnames
> list is shorter than the number of columns actually available from the
> subquery.  This breaks assorted code that is expecting that it can
> use list_length(eref->colnames) as a quick guide to the number of
> output columns.

Thanks for the fix!
I've tested all my cases on REL_15_STABLE, master and found no
anomalies in this area.

Best regards,
Alexander

Commits

  1. Fix more bugs caused by adding columns to the end of a view.

  2. Fix crash when columns have been added to the end of a view.