ST_Force_Collection — Converts the geometry into a GEOMETRYCOLLECTION.
geometry ST_Force_Collection(
geometry geomA)
;
Converts the geometry into a GEOMETRYCOLLECTION. This is useful for simplifying the WKB representation.
Availability: 1.2.2, prior to 1.3.4 this function will crash with Curves. This is fixed in 1.3.4+
This function supports 3d and will not drop the z-index.
This method supports Circular Strings and Curves
SELECT ST_AsEWKT(ST_Force_Collection('POLYGON((0 0 1,0 5 1,5 0 1,0 0 1),(1 1 1,3 1 1,1 3 1,1 1 1))')); st_asewkt ---------------------------------------------------------------------------------- GEOMETRYCOLLECTION(POLYGON((0 0 1,0 5 1,5 0 1,0 0 1),(1 1 1,3 1 1,1 3 1,1 1 1))) SELECT ST_AsText(ST_Force_Collection('CIRCULARSTRING(220227 150406,2220227 150407,220227 150406)')); st_astext -------------------------------------------------------------------------------- GEOMETRYCOLLECTION(CIRCULARSTRING(220227 150406,2220227 150407,220227 150406)) (1 row)