ST_Summary — Returns a text summary of the contents of a geometry.
text ST_Summary(
geometry g)
;
text ST_Summary(
geography g)
;
Returns a text summary of the contents of the geometry.
Flags shown square brackets after the geometry type have the following meaning:
M: has M coordinate
Z: has Z coordinate
B: has a cached bounding box
G: is geodetic (geography)
S: has spatial reference system
This method supports Circular Strings and Curves.
This function supports Polyhedral surfaces.
This function supports Triangles and Triangulated Irregular Network Surfaces (TIN).
Availability: 1.2.2
Enhanced: 2.0.0 added support for geography
Enhanced: 2.1.0 S flag to denote if has a known spatial reference system
Enhanced: 2.2.0 Added support for TIN and Curves
=# SELECT ST_Summary(ST_GeomFromText('LINESTRING(0 0, 1 1)')) as geom, ST_Summary(ST_GeogFromText('POLYGON((0 0, 1 1, 1 2, 1 1, 0 0))')) geog; geom | geog -----------------------------+-------------------------- LineString[B] with 2 points | Polygon[BGS] with 1 rings | ring 0 has 5 points : (1 row) =# SELECT ST_Summary(ST_GeogFromText('LINESTRING(0 0 1, 1 1 1)')) As geog_line, ST_Summary(ST_GeomFromText('SRID=4326;POLYGON((0 0 1, 1 1 2, 1 2 3, 1 1 1, 0 0 1))')) As geom_poly; ; geog_line | geom_poly -------------------------------- +-------------------------- LineString[ZBGS] with 2 points | Polygon[ZBS] with 1 rings : ring 0 has 5 points : (1 row)