ST_Entity
Remarque :
ST_Geometry in Oracle only
Definition
ST_Entity returns the spatial entity type of an ST_Geometry. The spatial entity type is the value stored in the entity member field of the ST_Geometry object.
Syntax
sde.st_entity (g1 sde.st_geometry)
Return type
Number
Example
CREATE TABLE sample_geometries (id integer, geometry sde.st_geometry); INSERT INTO SAMPLE_GEOMETRIES (id, geometry) VALUES ( 1901, sde.st_geometry ('point (1 2)', 0) ); INSERT INTO SAMPLE_GEOMETRIES (id, geometry VALUES ( 1902, sde.st_geometry ('linestring (33 2, 34 3, 35 6)', 0) ); INSERT INTO SAMPLE_GEOMETRIES (id, geometry) VALUES ( 1903, sde.st_geometry ('polygon ((3 3, 4 6, 5 3, 3 3))', 0) ); SELECT sde.st_entity (geometry) entity, UPPER (sde.st_geometrytype (geometry)) TYPE FROM SAMPLE_GEOMETRIES; ENTITY TYPE 1 ST_POINT 4 ST_LINESTRING 8 ST_POLYGON
3/6/2012