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* Mysterious column "name"
@ 2011-08-04 14:50 Nikolay <wheelly@gmail.com>
2011-08-09 15:34 ` Re: Mysterious column "name" Oliveiros d'Azevedo Cristina <oliveiros.cristina@marktest.pt>
2011-08-09 16:04 ` Re: Mysterious column "name" Tom Lane <tgl@sss.pgh.pa.us>
0 siblings, 2 replies; 4+ messages in thread
From: Nikolay @ 2011-08-04 14:50 UTC (permalink / raw)
To: pgsql-sql
Good day!
I found one strange results for sql-query.
create table testtable (
f1 int,
f2 int
);
insert into testtable(f1, f2) values(1, 100);
select testtable.* from testtable; // it is ok
select testtable from testtable; // it is ok
select testtable.name from testtable; // returns strange result.
-----------------------------------------------------------------
name
name
-----------------------------------------------------------------
"(1,100)"
-----------------------------------------------------------------
no error message about nonexistent column.
Result is similar to second variant, but pgAdmin3 shows not full record.
for long table the result is truncated
select aaaaaa."name"
from yc_accounts aaaaaa
-----------------------------------------------------------------
name
name
-----------------------------------------------------------------
"(1154,81,testtter,"","","","","","","","","",donald22@126.com,""
-----------------------------------------------------------------
The same results on two servers.
PostgreSQL 9.0.4 on x86_64-pc-linux-gnu, compiled by GCC gcc-4.4.real
(Debian 4.4.5-8) 4.4.5, 64-bit
PostgreSQL 9.0.4 on x86_64-pc-linux-gnu, compiled by GCC gcc-4.5.real
(Ubuntu/Linaro 4.5.2-8ubuntu4) 4.5.2, 64-bit
Is it a feature or a bug? I didn't found information in documentation
about this.
Best regards.
Nikolay.
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: Mysterious column "name"
2011-08-04 14:50 Mysterious column "name" Nikolay <wheelly@gmail.com>
@ 2011-08-09 15:34 ` Oliveiros d'Azevedo Cristina <oliveiros.cristina@marktest.pt>
2011-08-09 16:00 ` Re: Mysterious column "name" Steve Crawford <scrawford@pinpointresearch.com>
1 sibling, 1 reply; 4+ messages in thread
From: Oliveiros d'Azevedo Cristina @ 2011-08-09 15:34 UTC (permalink / raw)
To: Nikolay <wheelly@gmail.com>; pgsql-sql
Strange...
Tables have hidden columns but AFAIK, "name" is not one of them...
http://www.postgresql.org/docs/9.0/interactive/ddl-system-columns.html
Best,
Oliveiros
----- Original Message -----
From: "Nikolay" <wheelly@gmail.com>
To: <pgsql-sql@postgresql.org>
Sent: Thursday, August 04, 2011 3:50 PM
Subject: [SQL] Mysterious column "name"
> Good day!
>
> I found one strange results for sql-query.
>
> create table testtable (
> f1 int,
> f2 int
> );
>
> insert into testtable(f1, f2) values(1, 100);
>
> select testtable.* from testtable; // it is ok
>
> select testtable from testtable; // it is ok
>
> select testtable.name from testtable; // returns strange result.
> -----------------------------------------------------------------
> name
> name
> -----------------------------------------------------------------
> "(1,100)"
> -----------------------------------------------------------------
> no error message about nonexistent column.
> Result is similar to second variant, but pgAdmin3 shows not full record.
>
> for long table the result is truncated
> select aaaaaa."name"
> from yc_accounts aaaaaa
> -----------------------------------------------------------------
> name
> name
> -----------------------------------------------------------------
> "(1154,81,testtter,"","","","","","","","","",donald22@126.com,""
> -----------------------------------------------------------------
>
> The same results on two servers.
> PostgreSQL 9.0.4 on x86_64-pc-linux-gnu, compiled by GCC gcc-4.4.real
> (Debian 4.4.5-8) 4.4.5, 64-bit
>
> PostgreSQL 9.0.4 on x86_64-pc-linux-gnu, compiled by GCC gcc-4.5.real
> (Ubuntu/Linaro 4.5.2-8ubuntu4) 4.5.2, 64-bit
>
> Is it a feature or a bug? I didn't found information in documentation
> about this.
>
>
> Best regards.
> Nikolay.
>
> --
> Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-sql
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: Mysterious column "name"
2011-08-04 14:50 Mysterious column "name" Nikolay <wheelly@gmail.com>
2011-08-09 15:34 ` Re: Mysterious column "name" Oliveiros d'Azevedo Cristina <oliveiros.cristina@marktest.pt>
@ 2011-08-09 16:00 ` Steve Crawford <scrawford@pinpointresearch.com>
0 siblings, 0 replies; 4+ messages in thread
From: Steve Crawford @ 2011-08-09 16:00 UTC (permalink / raw)
To: Oliveiros d'Azevedo Cristina <oliveiros.cristina@marktest.pt>; +Cc: Nikolay <wheelly@gmail.com>; pgsql-sql
On 08/09/2011 08:34 AM, Oliveiros d'Azevedo Cristina wrote:
> Strange...
>
> Tables have hidden columns but AFAIK, "name" is not one of them...
>
> http://www.postgresql.org/docs/9.0/interactive/ddl-system-columns.html
>
> ...
>
>> Good day!
>>
>> I found one strange results for sql-query.
>>
>> create table testtable (
>> f1 int,
>> f2 int
>> );
>>
>> insert into testtable(f1, f2) values(1, 100);
>>
>> select testtable.* from testtable; // it is ok
>>
>> select testtable from testtable; // it is ok
>>
>> select testtable.name from testtable; // returns strange result.
>> -----------------------------------------------------------------
>> name
>> name
>> -----------------------------------------------------------------
>> "(1,100)"
>> -----------------------------------------------------------------
>> no error message about nonexistent column.
>> Result is similar to second variant, but pgAdmin3 shows not full record.
>> ...
>
See http://www.postgresql.org/docs/9.0/static/rowtypes.html on composite
data types and scroll to section 8.15.3.
Cheers,
Steve
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: Mysterious column "name"
2011-08-04 14:50 Mysterious column "name" Nikolay <wheelly@gmail.com>
@ 2011-08-09 16:04 ` Tom Lane <tgl@sss.pgh.pa.us>
1 sibling, 0 replies; 4+ messages in thread
From: Tom Lane @ 2011-08-09 16:04 UTC (permalink / raw)
To: Nikolay <wheelly@gmail.com>; +Cc: pgsql-sql
Nikolay <wheelly@gmail.com> writes:
> select testtable.name from testtable; // returns strange result.
See
http://archives.postgresql.org/pgsql-bugs/2010-10/msg00269.php
This will change in 9.1:
http://git.postgresql.org/gitweb/?p=postgresql.git&a=commitdiff&h=543d22fc7
regards, tom lane
^ permalink raw reply [nested|flat] 4+ messages in thread
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2011-08-04 14:50 Mysterious column "name" Nikolay <wheelly@gmail.com>
2011-08-09 15:34 ` Oliveiros d'Azevedo Cristina <oliveiros.cristina@marktest.pt>
2011-08-09 16:00 ` Steve Crawford <scrawford@pinpointresearch.com>
2011-08-09 16:04 ` Tom Lane <tgl@sss.pgh.pa.us>
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