Обсуждение: This is a limit-offset bug?

Hi people,

Yesterday when i was making some commands on 8.3.5
(on Centos)
i found a rare behavior of limit offset.

Try in psql:

select * from foo limit 3; <- shows ok
select * from foo limit3; <- shows all rows
select * from foo offset1223raf3w4t4tgga; <- shows all rows
select * from foo limitsdfsdfaerfgsafqaweawe; <- shows all rows
select * from foo limit; <- this shows error ok
select * from foo limitt; ....

All the chars inmediatly continue the limit or offset commands
are ignored.

If this kind of problems there isn't a bug, sorry.

--
      Emanuel Calvo Franco
Syscope Postgresql Consultant
     ArPUG / AOSUG Member

On Fri, Dec 26, 2008 at 09:52:59AM -0200, Emanuel Calvo Franco wrote:
> Hi people,
>
> Yesterday when i was making some commands on 8.3.5
> (on Centos)
> i found a rare behavior of limit offset.
>
> Try in psql:
>
> select * from foo limit 3; <- shows ok
> select * from foo limit3; <- shows all rows
> select * from foo offset1223raf3w4t4tgga; <- shows all rows
> select * from foo limitsdfsdfaerfgsafqaweawe; <- shows all rows
> select * from foo limit; <- this shows error ok
> select * from foo limitt; ....

At a wild gues, if the string after the table name is a single token it
gets interpreted as an alias for the table. Remember that AS is
optional.

Have a nice day,
--
Martijn van Oosterhout   <kleptog@svana.org>   http://svana.org/kleptog/
> Please line up in a tree and maintain the heap invariant while
> boarding. Thank you for flying nlogn airlines.

2008/12/26 Martijn van Oosterhout <kleptog@svana.org>:
> On Fri, Dec 26, 2008 at 09:52:59AM -0200, Emanuel Calvo Franco wrote:
>> Hi people,
>>
>> Yesterday when i was making some commands on 8.3.5
>> (on Centos)
>> i found a rare behavior of limit offset.
>>
>> Try in psql:
>>
>> select * from foo limit 3; <- shows ok
>> select * from foo limit3; <- shows all rows
>> select * from foo offset1223raf3w4t4tgga; <- shows all rows
>> select * from foo limitsdfsdfaerfgsafqaweawe; <- shows all rows
>> select * from foo limit; <- this shows error ok
>> select * from foo limitt; ....
>
> At a wild gues, if the string after the table name is a single token it
> gets interpreted as an alias for the table. Remember that AS is
> optional.
>

Yes, you're right.
i look at:

create table foo (i serial); (...inserts by default)
select limit111.i from foo limit111; <- this returns all rows on i

Is not a limit question, is about table alias. D'oh!

Sorry...
> Have a nice day,
> --
> Martijn van Oosterhout   <kleptog@svana.org>   http://svana.org/kleptog/
>> Please line up in a tree and maintain the heap invariant while
>> boarding. Thank you for flying nlogn airlines.
>
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--
      Emanuel Calvo Franco
Syscope Postgresql Consultant
     ArPUG / AOSUG Member