Re: Alter Table Command Rearranges Rows - Mailing list pgsql-general

From Carlos Mennens
Subject Re: Alter Table Command Rearranges Rows
Date
Msg-id AANLkTi=+4QdY46uiB5HMbbjThEEwKkZofVbUWUGtmc3J@mail.gmail.com
Whole thread Raw
In response to Re: Alter Table Command Rearranges Rows  (Richard Broersma <richard.broersma@gmail.com>)
List pgsql-general
On Fri, Sep 17, 2010 at 4:32 PM, Michael Glaesemann
<grzm@seespotcode.net> wrote:
> This isn't valid syntax: I believe you issued UPDATE users....

Woops. I did use the UPDATE and not ALTER command.

On Fri, Sep 17, 2010 at 4:39 PM, Richard Broersma
<richard.broersma@gmail.com> wrote:
> On Fri, Sep 17, 2010 at 1:32 PM, Michael Glaesemann
> <grzm@seespotcode.net> wrote:
>
>> Postgres (nor any other SQL RDBMS) does not guarantee row order unless you specify it with an ORDER BY clause.
>
> This is true, but some database will maintain a tables clustering.
> MS-Access comes to mind.  I don't know if MySQL does this also.

MySQL does but I am fine with just running the ORDER BY command when I
use SELECT.

-Carlos

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