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Re: [BUGS] BUG #2223: Misleading info in docs on volatility level of

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com>
Cc: dueyduey(at)freemail(dot)hu, PostgreSQL-patches <pgsql-patches(at)postgresql(dot)org>
Subject: Re: [BUGS] BUG #2223: Misleading info in docs on volatility level of
Date: 2006-01-31 22:40:15
Message-ID: 200601312240.k0VMeF020881@candle.pha.pa.us (view raw or flat)
Thread:
Lists: pgsql-bugspgsql-patches
Jim C. Nasby wrote:
> This was recently discussed on -docs and I believe a patch was applied
> to at least HEAD.

Yep, patch attached.  Any improvements?

---------------------------------------------------------------------------


> 
> On Mon, Jan 30, 2006 at 10:33:35AM +0000, dueyduey(at)freemail(dot)hu wrote:
> > 
> > The following bug has been logged online:
> > 
> > Bug reference:      2223
> > Logged by:          
> > Email address:      dueyduey(at)freemail(dot)hu
> > PostgreSQL version: 8.1
> > Operating system:   linux
> > Description:        Misleading info in docs on volatility level of functions
> > Details: 
> > 
> > Hi, all!
> > The documentation on how to and why declare a function STABLE or IMMUTABLE
> > is very laconic. It makes clear what promises I make when determining the
> > volatility of my functions but it fails to point out what exactly I can
> > expect in turn for my promises.
> > See also the discussion on bug#2150 on the pgsql-bugs list.
> > Thanks for bothering.
> > 
> > ---------------------------(end of broadcast)---------------------------
> > TIP 9: In versions below 8.0, the planner will ignore your desire to
> >        choose an index scan if your joining column's datatypes do not
> >        match
> > 
> 
> -- 
> Jim C. Nasby, Sr. Engineering Consultant      jnasby(at)pervasive(dot)com
> Pervasive Software      http://pervasive.com    work: 512-231-6117
> vcard: http://jim.nasby.net/pervasive.vcf       cell: 512-569-9461
> 
> ---------------------------(end of broadcast)---------------------------
> TIP 6: explain analyze is your friend
> 

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073

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