Re: Incomplete compatibility information for triggers

From: Josh Kupershmidt <schmiddy(at)gmail(dot)com>
To: Louis-Claude Canon <louis-claude(dot)canon(at)femto-st(dot)fr>
Cc: pgsql-docs(at)postgresql(dot)org
Subject: Re: Incomplete compatibility information for triggers
Date: 2013-01-13 21:47:14
Message-ID: CAK3UJRH53ikaqRfubJ9sisgX=eTVvQkd40Bq8RwJ9JeEkeYrYQ@mail.gmail.com
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On Wed, Nov 14, 2012 at 2:19 PM, Louis-Claude Canon
<louis-claude(dot)canon(at)femto-st(dot)fr> wrote:
> Le 14/11/2012 05:23, Josh Kupershmidt a écrit :
>
>> On Sun, Nov 11, 2012 at 3:52 PM, Louis-Claude Canon
>> <louis-claude(dot)canon(at)femto-st(dot)fr> wrote:
>>
>>> the compatibility section of the "create trigger" page
>>> (http://www.postgresql.org/docs/devel/static/sql-createtrigger.html)
>>> claims
>>> that a missing functionality is the ability to define aliases for the
>>> "old"
>>> and "new" rows or tables. If I am understanding this correctly, another
>>> related missing functionality is that PostgreSQL does not allow the old
>>> and
>>> new tables to be referenced for statement-level triggers (i.e., the "OLD
>>> TABLE" that contains all the deleted/modified rows in case of
>>> deletion/update). I think this is also worth noting as any workaround for
>>> it
>>> seems to be more difficult (if possible at all) than for the missing
>>> alias
>>> feature.
>>
>> +1, it seems like a useful missing piece from the SQL:2011 standard.
>> Care to send a documentation patch?
>
>
> Let me know if it requires a second round.

A (belated) +1 for this patch. There were two small typos which I've
fixed in the attached version. You may want to add this patch soon to
the 2013-01 CommitFest so it doesn't get lost.

> By the way, I can propose another patch regarding the transaction isolation
> relatively to my previous post on pgsql-bugs.

If that doc change hasn't been made yet, you may want to post a patch.

Josh

Attachment Content-Type Size
0002-Document-the-missing-OLD-NEW-TABLE-trigger-feature.patch application/octet-stream 1.6 KB

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