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Re: Primary Key index

From: Thom Brown <thom(at)linux(dot)com>
To: Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>
Cc: Peter Eisentraut <peter_e(at)gmx(dot)net>, pgsql-docs <pgsql-docs(at)postgresql(dot)org>
Subject: Re: Primary Key index
Date: 2010-08-26 18:52:44
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Lists: pgsql-docs
On 26 August 2010 18:50, Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov> wrote:
> Thom Brown <thom(at)linux(dot)com> wrote:
>> Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov> wrote:
>>> It looks like discussion died here.  Do you want to propose a new
>>> patch?  (I'd be happy to give it a shot if you'd rather.)
>> Sure, go for it. :)
> Initial stab at it attached.
> I'm torn on whether the paragraph I added to the foreign key
> constraint section should be in a warning block -- we do see
> complaints from time-to-time from people who are surprised by slow
> deletes from referenced tables; in some cases they have come from
> database products which automatically create an index on the
> referencing columns and are surprised that they need to choose
> whether and how to do so in PostgreSQL.
> I think we may want to link to these sections from the appropriate
> sections of CREATE TABLE (and possibly ALTER TABLE), but that seems
> like it could be a separate patch.
> Exclusion constraint documentation relies rather more heavily on the
> CREATE TABLE page, and is skimpy on the constraints page.  I think
> that the CREATE TABLE page should focus on syntax and an overview,
> and link to the constraints page for any in-depth information.
> Again, that seems like it could be addressed separately, but it
> seemed worth mentioning, since I stumbled across it.
> -Kevin

Looks good.  Do we usually got into fine details such as the name of
the index?  They'll see the index name returned when they create the
table or add the constraint anyway, and if they missed it they only
need to do a "\dt tablename" to find out what it was.

Thom Brown
Twitter: @darkixion
IRC (freenode): dark_ixion
Registered Linux user: #516935

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