Documentation along with style fix.
distances2r3.patch
Description: Binary data
> On 08 Feb 2015, at 00:32, Alexander Korotkov <aekorot...@gmail.com> wrote: > > Hi! > > On Sat, Feb 7, 2015 at 12:45 PM, Stas Kelvich <stas.kelv...@gmail.com> wrote: > I had updated old patch with kNN operators for cube data structures. Copying > description from old message: > > Following distance operators introduced: > > <#> taxicab distance > <-> euclidean distance > <=> chebyshev distance > > For example: > SELECT * FROM objects ORDER BY objects.coord <-> '(137,42,314)'::cube LIMIT > 10; > > Also there is operator "->" for selecting ordered rows directly from index. > This request selects rows ordered ascending by 3rd coordinate: > > SELECT * FROM objects ORDER BY objects.coord->3 LIMIT 10; > > For descendent ordering suggested syntax with minus before coordinate. > This request selects rows ordered descending by 4th coordinate: > > SELECT * FROM objects ORDER BY objects.coord->-4 LIMIT 10; > > I've checked the patch. The first notes are so: > 1) Check coding style, in particular braces. Postgres coding style require > using it for multiline statements. > 2) Update documentation according to new features. > > ------ > With best regards, > Alexander Korotkov.
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