Re: Negative LIMIT and OFFSET?

Gregory Stark wrote:
> 
> "Simon Riggs" <simon@2ndquadrant.com> writes:
> 
> > I'm fairly surprised these queries work. Is there some reason why we
> > support this? April Fools Day? Jules Verne? I'm all for fast queries,
> > but zero seems like the lowest value we should support...
> 
> Huh, I was all set to post an example of a useful application of it but then
> apparently I'm wrong and it doesn't work:
> 
> postgres=# select * from generate_series(1,10) offset -1 limit 2;
>  generate_series 
> -----------------
>                1
>                2
> (2 rows)
> 
> I'll leave it as an exercise for the reader to guess what I was expecting.
> 
> So given that that doesn't work I don't see any particular reason to accept
> negative offsets or limits in 8.4 and on.

Since we got LIMIT/OFFSET from MySQL, would someone tell us how MySQL
behaves in these cases?

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://postgres.enterprisedb.com
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