Re: To Postgres Devs : Wouldn't changing the select limit

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Jochem van Dieten <jochemd(at)oli(dot)tudelft(dot)nl>, pgsql-general(at)postgresql(dot)org
Subject: Re: To Postgres Devs : Wouldn't changing the select limit
Date: 2001-10-20 04:54:41
Message-ID: 200110200454.f9K4sfl04755@candle.pha.pa.us
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> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > One more thing. I have added the code to suggest alternate syntax for
> > LIMIT #,#:
>
> > test=> select * from pg_class LIMIT 1,1;
> > ERROR: LIMIT #,# syntax no longer supported. Use LIMIT # OFFSET #.
>
> If you're going to do that, *please* suggest the *correct* substitution.
> AFAICT, our version of LIMIT m,n transposes to OFFSET m LIMIT n; but
> your message suggests the opposite.

Remember, the 7.1 code was:

! select_limit: LIMIT select_limit_value ',' select_offset_value
! { $$ = makeList2($4, $2); }

This was changed a few weeks ago to match MySQL, and only today removed.

However, our new message suggests the old PostgreSQL syntax, not the
MySQL syntax. Optimally we should ship with this ordering for 7.2 and
reverse it for 7.3 or 7.4.

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
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