Horton

Re: UPDATE SET (a,b,c) = (SELECT ...) versus rules

Vik Fearing <vik.fearing@dalibo.com>

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From: Vik Fearing <vik.fearing@dalibo.com>
To: Hannu Krosing <hannu@2ndQuadrant.com>, Tom Lane <tgl@sss.pgh.pa.us>, pgsql-hackers@postgreSQL.org
Date: 2014-06-17T09:22:17Z
Lists: pgsql-hackers 
On 06/17/2014 09:43 AM, Hannu Krosing wrote:
> On 06/14/2014 09:35 PM, Tom Lane wrote:
>> > As I mentioned awhile ago, I'm thinking about implementing the
>> > SQL-standard construct
>> >
>> > 	UPDATE foo SET ..., (a,b,...) = (SELECT x,y,...), ...
>> >
>> > I've run into a rather nasty problem, which is how does this interact
>> > with expansion of NEW references in ON UPDATE rules?  
>
> Was'nt there a plan (consensus?) about deprecating rules altogether ?

I believe that was just for user access to them, ie CREATE RULE.  I
don't think there was ever question of purging them from the code base.
-- 
Vik