[postgis-users] Spatially ordering data

[Darafei "Komяpa" Praliaskouski]

Have a look here:

http://www.paulnorman.ca/blog/2016/05/improve-your-st-geohash-sorting-with-these-three-simple-tricks/


for simplest case, you can just order by your geom field.

ср, 1 мар. 2017 г. в 14:44, Jonathan Moules <jonathan-lists at lightpear.com>:

> Hi List,
> I've got a database of about 60 million spatial features that I need to
> run through a process.
>
> The process can't do all of them at once, so I want to get the data from
> postgis in spatial chunks of up to say 500,000 features per query.
>
> The data itself isn't evenly spatially distributed, so gridding won't work
> either, and I don't see any prospectively useful functions in the reference.
>
> Non-spatially this would be simple:
>
>     *SELECT * FROM my_table ORDER BY some_key ASC LIMIT 500000 OFFSET 0*
>
> Does anyone have any suggestions for how to spatially order data with
> PostGIS?
>
> Thanks,
> Jonathan
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