Re: BUG #3518: ERROR: IN types character varying and integer cannot be matched

Lists: pgsql-bugs
From: "Tomasz Kawczynski" <sober(dot)pl(at)gmail(dot)com>
To: pgsql-bugs(at)postgresql(dot)org
Subject: BUG #3518: ERROR: IN types character varying and integer cannot be matched
Date: 2007-08-06 13:39:46
Message-ID: 200708061339.l76Ddkjo052645@wwwmaster.postgresql.org
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Lists: pgsql-bugs


The following bug has been logged online:

Bug reference: 3518
Logged by: Tomasz Kawczynski
Email address: sober(dot)pl(at)gmail(dot)com
PostgreSQL version: 8.2.4
Operating system: Linux Gentoo
Description: ERROR: IN types character varying and integer cannot be
matched
Details:

Hello everyone,

After

SELECT * FROM s_skladnik WHERE kod IN (902,902)

kod character(3)

i get error message

ERROR: IN types character varying and integer cannot be matched

whitch is ok (ive read about this restriction in 8.2.x)

but why after

SELECT * FROM s_skladnik WHERE kod IN (902)
or
SELECT * FROM s_skladnik WHERE kod = 902

I dont get error but query gives me correct result ?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Tomasz Kawczynski" <sober(dot)pl(at)gmail(dot)com>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #3518: ERROR: IN types character varying and integer cannot be matched
Date: 2007-08-06 15:17:40
Message-ID: 27657.1186413460@sss.pgh.pa.us
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"Tomasz Kawczynski" <sober(dot)pl(at)gmail(dot)com> writes:
> SELECT * FROM s_skladnik WHERE kod IN (902,902)
> ERROR: IN types character varying and integer cannot be matched

> whitch is ok (ive read about this restriction in 8.2.x)

> but why after

> SELECT * FROM s_skladnik WHERE kod IN (902)
> or
> SELECT * FROM s_skladnik WHERE kod = 902

> I dont get error but query gives me correct result ?

This inconsistency will be gone in 8.3:

regression=# select * from t1 where kod = 902;
ERROR: operator does not exist: character varying = integer
LINE 1: select * from t1 where kod = 902;
^
HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
regression=#

regards, tom lane