Re: [HACKERS] current- crash

Michael Reifenberger wrote:
>
> Hi,
> I can easily crash the backend of current- postgres on current- FreeBSD with
> loading a database with test.sql and test.dmp an executing the script x.sql.
> Anyone else?
>
> Bye!
> ----
> Michael Reifenberger
> Plaut Software GmbH, R/3 Basis
>
> ------------------------------------------------------------------------
> CREATE TABLE b (begt datetime, kid int4);
> CREATE TABLE a (kid int4);
> CREATE TABLE c (a int4, b varchar(30), c int4);
> CREATE INDEX b_0 on b using btree ( begt datetime_ops );
> CREATE INDEX b_1 on b using btree ( kid int4_ops );
> CREATE INDEX a_0 on a using btree ( kid int4_ops );
>
> ------------------------------------------------------------------------
> COPY b FROM stdin;
> \.
> COPY a FROM stdin;
> \.
> COPY c FROM stdin;
> 1 foo 1
> 2 foo bar 2
> 3 \N 3
> 4 \\serverla 4
> \.
>
> ------------------------------------------------------------------------
> explain SELECT a.kid as foo
> FROM a, b WHERE
> a.kid = b.kid AND
> ( b.kid = 23 OR
> b.kid = 36 );

I tried your script but I can't see nothing wrong. :)

CREATE TABLE b (begt datetime, kid int4);
CREATE
CREATE TABLE a (kid int4);
CREATE
CREATE TABLE c (a int4, b varchar(30), c int4);
CREATE
CREATE INDEX b_0 on b using btree ( begt datetime_ops );
CREATE
CREATE INDEX b_1 on b using btree ( kid int4_ops );
CREATE
CREATE INDEX a_0 on a using btree ( kid int4_ops );
CREATE

COPY b FROM stdin;
COPY a FROM stdin;

COPY c FROM stdin;

select * from c;
a|b |c
-+---------+-
1|foo |1
2|foo bar |2
3| |3
4|\\servela|4
(4 rows)

explain SELECT a.kid as foo
FROM a, b WHERE
a.kid = b.kid AND
( b.kid = 23 OR
b.kid = 36 );
NOTICE: QUERY PLAN:

Merge Join (cost=0.00 size=1 width=8)
-> Seq Scan (cost=0.00 size=0 width=0)
-> Sort (cost=0.00 size=0 width=0)
-> Seq Scan on a (cost=0.00 size=0 width=4)
-> Seq Scan (cost=0.00 size=0 width=0)
-> Sort (cost=0.00 size=0 width=0)
-> Seq Scan on b (cost=0.00 size=0 width=4)

EXPLAIN

Jose'