[postgis-users] splitting a linestring with points

[Martijn Meijers]

st_dump would make it possible, no?

select st_astext((st_dump('MULTILINESTRING((0 0, 10 10), (20 20, 30 
30))')).geom);
         st_astext
-------------------------
  LINESTRING(0 0,10 10)
  LINESTRING(20 20,30 30)
(2 rows)



On 08-02-18 21:48, Olivier Leprêtre wrote:
>
> Hi,
>
> I want to break a linestring into linestrings by breaking it with a 
> set of points along this line. This appeared easy at first but 
> finally, I tried using st_split(line, set of points) but this returns 
> multilinestrings when I just wants linestrings. I tried several 
> functions like st_dump, st_geometryN, stcollectionextract and so on 
> after st_split but did not find how could I get only rows of 
> linestring splitted by the points acting like blades on the first 
> linestring.
>
> Thanks for any help,
>
> Olivier
>
>
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