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ST_Dimension

ST_DimensionÀº ±âÇÏÇÐ ¿ÀºêÁ§Æ®¸¦ ÃëÇØ ÀÌÀÇ Â÷¿øÀ» ¸®ÅÏÇÕ´Ï´Ù.

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db2gse.ST_Dimension(g1 db2gse.ST_Geometry)

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Integer

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DIMENSION_TEST Å×À̺íÀº Ä÷³ GEOTYPE ¹× G1À¸·Î ÀÛ¼ºµË´Ï´Ù. GEOTYPE Ä÷³Àº G1 ±âÇÏÇÐ Ä÷³¿¡ ÀúÀåµÈ ±âÇÏÇÐ ¼­ºêŬ·¡½ºÀÇ À̸§À» ÀúÀåÇÕ´Ï´Ù.

CREATE TABLE DIMENSION_TEST (geotype varchar(20), g1 db2gse.ST_Geometry) 

INSERT¹®Àº DIMENSION_TEST Å×ÀÌºí¿¡ »ùÇà ¼­ºêŬ·¡½º¸¦ »ðÀÔÇÕ´Ï´Ù.

INSERT INTO DIMENSION_TEST
VALUES('Point',
       db2gse.ST_PointFromText('point (10.02 20.01)', 
          db2gse.coordref()..srid(0)))
 
INSERT INTO DIMENSION_TEST
VALUES('Linestring',
       db2gse.ST_LineFromText('linestring  (10.02 20.01,10.32 23.98,
              11.92 25.64)', db2gse.coordref()..srid(0)))
 
INSERT INTO DIMENSION_TEST
VALUES('Polygon',
       db2gse.ST_PolyFromText('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 DIMENSION_TEST
VALUES('Multipoint',
       db2gse.ST_MPointFromText('multipoint (10.02 20.01,10.32 23.98, 
               11.92 25.64)', db2gse.coordref()..srid(0)))
 
INSERT INTO DIMENSION_TEST
VALUES('Multilinestring',
       db2gse.ST_MLineFromText('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 DIMENSION_TEST
VALUES('Multipolygon',
       db2gse.ST_MPolyFromText('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)))

´ÙÀ½ÀÇ SELECT¹®Àº ÇØ´ç geotypeÀÇ Â÷¿øÀ¸·Î GEOTYPE Ä÷³¿¡ ÀúÀåµÈ ¼­ºêŬ·¡½º À̸§À» ³ª¿­ÇÕ´Ï´Ù.

SELECT geotype, db2gse.ST_Dimension(g1) "The dimension"
FROM DIMENSION_TEST

´ÙÀ½ÀÇ °á°ú ¼¼Æ®°¡ ¸®Åϵ˴ϴÙ.

GEOTYPE              The dimension
-------------------- -------------
ST_Point                    0
ST_Linestring               1
ST_Polygon                  2
ST_Multipoint               0
ST_Multilinestring          1
ST_Multipolygon             2
 
  6 record(s) selected.


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