Re: minor view creation weirdness

From: Robert Treat <xzilla(at)users(dot)sourceforge(dot)net>
To: Greg Stark <gsstark(at)mit(dot)edu>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: minor view creation weirdness
Date: 2003-10-03 16:55:42
Message-ID: 1065200142.24250.70.camel@camel
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On Fri, 2003-10-03 at 00:50, Greg Stark wrote:
>
> Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
>
> > >> I'd almost argue that we should change this message to an error
> >
> > > I agree.
> >
> > Motion proposed and seconded; any objections out there?
>
> Uhm, doesn't the spec have anything to say about this?
> I mean, the view sure looks like standard SQL on its face.
>
> In any case, I would sure think there was something strange about a query
> working fine as a select but not working in a view:
>
> slo=> select 'foo' as a,'bar' as b;
> a | b
> -----+-----
> foo | bar
> (1 row)
>
> slo=> create view x as select 'foo' as a,'bar' as b;
> WARNING: Attribute "a" has an unknown type
> Proceeding with relation creation anyway
> WARNING: Attribute "b" has an unknown type
> Proceeding with relation creation anyway
> CREATE VIEW
>
> slo=> select * from x;
> a | b
> -----+-----
> foo | bar
> (1 row)
>

or the create table case:

rms=# create table x as select 'foo' as a, 'bar' as b;
WARNING: 42P16: attribute "a" has type UNKNOWN
DETAIL: Proceeding with relation creation anyway.
LOCATION: CheckAttributeType, heap.c:427
WARNING: 42P16: attribute "b" has type UNKNOWN
DETAIL: Proceeding with relation creation anyway.
LOCATION: CheckAttributeType, heap.c:427
WARNING: attribute "a" has type UNKNOWN
DETAIL: Proceeding with relation creation anyway.
WARNING: attribute "b" has type UNKNOWN
DETAIL: Proceeding with relation creation anyway.
SELECT

rms=# select * from x;
a | b
-----+-----
foo | bar
(1 row)

rms=# \d x
Table "public.x"
Column | Type | Modifiers
--------+-----------+-----------
a | "unknown" |
b | "unknown" |

Robert Treat
--
Build A Brighter Lamp :: Linux Apache {middleware} PostgreSQL

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