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Server crash caused by CHECK on child

From: Kovacs Baldvin <kb136(at)hszk(dot)bme(dot)hu>
To: <pgsql-hackers(at)postgresql(dot)org>, <pgsql-sql(at)postgresql(dot)org>, Kevin Way <kevin(dot)way(at)overtone(dot)org>
Subject: Server crash caused by CHECK on child
Date: 2001-09-24 08:01:43
Message-ID: Pine.GSO.4.33.0109241000560.5647-100000@ural2 (view raw, whole thread or download thread mbox)
Lists: pgsql-bugspgsql-hackerspgsql-sql
-- Hi Kevin, and everyone!
-- I don't think that I only found a minor bug compared to
-- the other you wrote in your last letter: the backend crash
-- is caused by the same CHECK constraint in the child table.
-- However, for you without time to analyzing Kevin's huge
-- scheme, here is the very simplified, crash-causing script.

drop table child;
drop table ancestor;

create table ancestor (
  node_id int4,
  a int4

create table child (
  b int4 NOT NULL DEFAULT 0 ,
  c int4 not null default 3,
  CHECK ( child.b = 0 OR child.b = 1 )
) inherits (ancestor);

insert into ancestor values (3,4);
insert into child (node_id, a, b) values (5,6,1);

update ancestor set a=8 where node_id=5;

-- I am hunting it, but I have to learn all what this query-executing
-- about, so probably it takes uncomparable longer for me than for
-- a developer.
-- Regards,
-- Baldvin


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