Horton

BUG #16856: Crash when add "_RETURN" rule on child table

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From: PG Bug reporting form <noreply@postgresql.org>
To: pgsql-bugs@lists.postgresql.org
Cc: todoubaba@gmail.com
Date: 2021-02-06T07:46:14Z
Lists: pgsql-bugs 
The following bug has been logged on the website:

Bug reference:      16856
Logged by:          Yang Lin
Email address:      todoubaba@gmail.com
PostgreSQL version: 12.5
Operating system:   ubuntu 20.04
Description:        

create table parent(a text);
create table child() inherits (parent);
create or replace rule "_RETURN" as
    on select
    to child
    do instead
    select *
    from (values('x')) as t(a);

select * from parent;

The psql crash and report:
server closed the connection unexpectedly
        This probably means the server terminated abnormally
        before or while processing the request.
The connection to the server was lost. Attempting reset: Failed.

Commits

  1. Disallow converting an inheritance child table to a view.