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Z

Z´Â Á¡À» ÃëÇØ ÀÌÀÇ Z ÁÂÇ¥¸¦ ¸®ÅÏÇÕ´Ï´Ù.

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Z(p db2gse.ST_Point)

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Double

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´ÙÀ½ÀÇ CREATE TABLE¹®Àº ÇàÀ» °íÀ¯ÇÏ°Ô ³ªÅ¸³»´Â GID Ä÷³°ú PT1 Á¡ Ä÷³ÀÌ ÀÖ´Â Z_TEST Å×À̺íÀ» ÀÛ¼ºÇÕ´Ï´Ù.

CREATE TABLE Z_TEST (gid integer, pt1 db2gse.ST_Point) 

´ÙÀ½ÀÇ INSERT¹®Àº µÎ ÇàÀ» »ðÀÔÇÕ´Ï´Ù. Çϳª´Â Z ÁÂÇ¥³ª Ä¡¼ö°¡ ¾ø´Â Á¡À̰í, ´Ù¸¥ Ä÷³¿¡´Â Z ÁÂÇ¥¿Í Ä¡¼ö µÑ ¸ðµÎ ÀÖ½À´Ï´Ù.

INSERT INTO Z_TEST VALUES(1,
db2gse.ST_PointFromText('point (10.02 20.01)', db2gse.coordref()..srid(0)))
 
INSERT INTO Z_TEST VALUES(2,
db2gse.ST_PointFromText('point  zm (10.02 20.01 5.0 7.0)', 
    db2gse.coordref()..srid(0))) 

´ÙÀ½ÀÇ SELECT¹® ¹× ÇØ´ç °á°ú ¼¼Æ®¿¡¼­´Â GID Ä÷³ ¹× Á¡ÀÇ ¹èÁ¤¹Ðµµ Z ÁÂÇ¥¸¦ ³ª¿­ÇÕ´Ï´Ù. ù¹øÂ° ÇàÀº Á¡¿¡ Z ÁÂÇ¥°¡ ¾øÀ¸¹Ç·Î NULLÀÔ´Ï´Ù.

SELECT gid, db2gse.Z(pt1) "The Z coordinate" FROM Z_TEST
 
GID         The Z coordinate
----------- ------------------------
          1                        -
          2   +5.00000000000000E+000
 
  2 record(s) selected. 


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