[postgis-users] Learn how to create LineStrings from Polygons and Multipolygons

[Sandro Santilli]

On Fri, Jun 12, 2015 at 11:51:35PM +0000, Ruth Simm wrote:

> There seems to be a host of options for going from LineString to Polygon
> (ST_MakePolygon) - but not much for going the other way.

See ST_Boundary - http://postgis.net/docs/ST_Boundary.html

--strk;