From: Tom Lane <tgl@sss.pgh.pa.us>
To: Eric Veldhuyzen <ericv@xs4all.net>
Cc: pgsql-sql@postgresql.org
Subject: Re: cast of integer to bool doesn't work (anymore?)
Date: Fri, 21 Mar 2003 10:07:47 -0500
Message-ID: <12627.1048259267@sss.pgh.pa.us> (raw)
In-Reply-To: <20030321133646.GC6540@opium.xs4all.nl>
References: <20030321133646.GC6540@opium.xs4all.nl>
Eric Veldhuyzen <ericv@xs4all.net> writes:
> # select 0::boolean;
> bool=20
> ------
> f
> (1 row)
> Perfect.
Not so perfect as you think --- 7.2 does not allow casting from int to
bool any more than 7.3 does. Try this:
regression=# select 1::int::boolean;
ERROR: Cannot cast type 'integer' to 'boolean'
7.2 is interpreting your query like
regression=# select '1'::boolean;
bool
------
t
(1 row)
which still works in 7.3 --- but we tightened up the other case, for
reasons I don't recall at the moment but you can find in the mailing
list archives.
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, ericv@xs4all.net
Subject: Re: cast of integer to bool doesn't work (anymore?)
In-Reply-To: <12627.1048259267@sss.pgh.pa.us>
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