Hi Marc,

On Mon, Jan 23, 2012 at 3:04 PM, Vik Reykja <vikrey...@gmail.com> wrote:
> On Mon, Jan 23, 2012 at 11:25, Marc Balmer <m...@msys.ch> wrote:
>>
>> Am 22.01.12 14:22, schrieb Giuseppe Sucameli:
>> > test=> create table lx (i int);
>> > CREATE TABLE
>> > test=> alter table lx add xmin int;
>> > ERROR:  column "xmin" of relation "lx" already exists.
>>
>> That is not a bug, but a feature.
>
> I see it as a message bug.  Why wouldn't ALTER TABLE also tell us that xmin
> is a system column?  It makes things much more clear for newbies who don't
> see the column yet are told it exists if they're also told it's a system
> column.

I agree with Vik, the CREATE TABLE tells "xmin" is a system column,
why wouldn't ALTER TABLE do the same?

This would be a feature if CREATE TABLE didn't tell us that
xmin is a system column, otherwise is a bug.

> I would try to cook up a patch but I have no skills :-(

I'm going to write a patch to fix this problem.
Regards.

-- 
Giuseppe Sucameli

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