Re: Vote totals for SET in aborted transaction

Tom Lane <tgl@sss.pgh.pa.us>

From: Tom Lane <tgl@sss.pgh.pa.us>
To: Thomas Lockhart <lockhart@fourpalms.org>
Cc: Bruce Momjian <pgman@candle.pha.pa.us>, Hannu Krosing <hannu@tm.ee>, Scott Marlowe <scott.marlowe@ihs.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2002-04-29T16:20:07Z
Lists: pgsql-hackers
Thomas Lockhart <lockhart@fourpalms.org> writes:
> Rather than dismissing this out of hand, try to look at what it *does*
> enable. It allows developers to tune specific queries without having to
> restore values afterwards. Values or settings which may change from
> version to version, so end up embedding time bombs into applications.

I think it's a great idea.  I just want it to be a different syntax from
the existing SET, so as not to break existing applications that expect
SET to be persistent.  It seems to me that marking such a command with
a new syntax is reasonable from a user-friendliness point of view too:
if you write "LOCAL SET foo" or some similar syntax, it is obvious to
every onlooker what your intentions are.  If we redefine "SET" to have
context-dependent semantics, I think we are just creating a recipe for
confusion.

			regards, tom lane