O ST_GeometryType pega um objeto ST_Geometry e apresenta o tipo de sua geometria como a cadeia.
Sintaxe
db2gse.ST_GeometryType (g db2gse.ST_Geometry)
Tipo de retorno
Varchar(4000)
Exemplos
A tabela GEOMETRYTYPE_TEST contém a coluna de geometria G1.
CREATE TABLE GEOMETRYTYPE_TEST(g1 db2gse.ST_Geometry)
As seguintes instruções INSERT inserem cada subclasse de geometria na coluna G1.
INSERT INTO GEOMETRYTYPE_TEST VALUES(db2gse.ST_GeometryFromText('point (10.02 20.01)', db2gse.coordref()..srid(0))) INSERT INTO GEOMETRYTYPE_TEST VALUES (db2gse.ST_GeometryFromText('linestring (10.01 20.01, 10.01 30.01, 10.01 40.01)', db2gse.coordref()..srid(0))) INSERT INTO GEOMETRYTYPE_TEST VALUES(db2gse.ST_Geometrytype_test values(db2gse.ST_GeomFromText('polygon ((10.02 20.01,11.92 35.64,25.02 34.15,19.15 33.94, 10.02 20.01))', db2gse.coordref()..srid(0)))) INSERT INTO GEOMETRYTYPE_TEST VALUES(db2gse.ST_GeometryFromText('multipoint (10.02 20.01,10.32 23.98, 11.92 25.64)', db2gse.coordref()..srid(0))) INSERT INTO GEOMETRYTYPE_TEST VALUES(db2gse.ST_GeometryFromText('multilinestring ((10.02 20.01,10.32 23.98, 11.92 25.64), (9.55 23.75,15.36 30.11))', db2gse.coordref()..srid(0))) INSERT INTO GEOMETRYTYPE_TEST VALUES(db2gse.ST_GeometryFromText('multipolygon (((10.02 20.01,11.92 35.64, 25.02 34.15, 19.15 33.94,10.02 20.01)), ((51.71 21.73,73.36 27.04,71.52 32.87, 52.43 31.90,51.71 21.73)))', db2gse.coordref()..srid(0)))
A seguinte instrução INSERT insere o tipo de geometria de cada subclasse que está armazenada na coluna de geometria G1.
SELECT db2gse.ST_GeometryType(g1) "Geometry type" FROM GEOMETRYTYPE_TEST
O seguinte conjunto de resultados retorna.
Geometry type -------------------------------- ST_Point ST_LineStringST_Polygon ST_MultiPointST_MultiLineStringST_MultiPolygon 6 record(s) selected.