Re: Potential bug in postgres 8.2.4

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: pgsql-sql(at)postgresql(dot)org
Cc: Tomas Doran <bobtfish(at)bobtfish(dot)net>, tdoran(at)venda(dot)com
Subject: Re: Potential bug in postgres 8.2.4
Date: 2007-05-24 11:51:15
Message-ID: 200705241351.15767.peter_e@gmx.net
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Am Donnerstag, 24. Mai 2007 13:20 schrieb Tomas Doran:
> CREATE TABLE testtable (
>      col1   char(1),
>     data   text
> );

> The following queries all work:
> INSERT INTO testtable (col1, data) VALUES (3::int, 'foobarbazquux');
> SELECT * FROM testtable WHERE col1 = 3::int;
> SELECT * FROM testtable WHERE col1 IN (1);
> SELECT * FROM testtable WHERE col1 IN (1::int);

> However these querys fail on 8.2.4, but work correctly on 8.1:
> SELECT * FROM testtable WHERE col1 IN (1::int, 2::int);
> SELECT * FROM testtable WHERE col1 IN (1, 2);

All of this is strictly speaking incorrect anyway. And the queries that do
work will most likely start not working in a future version. All of this is
a gradual effort to reduce excessive automatic type casting.

I suggest you fix your application.

--
Peter Eisentraut
http://developer.postgresql.org/~petere/

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