Re: Negative LIMIT and OFFSET?

"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.

-- 
  Gregory Stark
  EnterpriseDB          http://www.enterprisedb.com
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