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M

MÀº Á¡À» ÃëÇØ ÀÌÀÇ Ä¡¼ö¸¦ ¸®ÅÏÇÕ´Ï´Ù.

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db2gse.M(p db2gse.ST_Point)

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Double

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´ÙÀ½ÀÇ CREATE TABLE ¸í·É¹®Àº M_TEST Å×À̺íÀ» ÀÛ¼ºÇÕ´Ï´Ù. M_TEST¿¡´Â ÇàÀ» °íÀ¯ÇÏ°Ô ½Äº°ÇÏ´Â GID Á¤¼ö Ä÷³°ú »ùÇà ±âÇϸ¦ ÀúÀåÇÏ´Â PT1 Á¡ Ä÷³ÀÇ µÎ Ä÷³ÀÌ ÀÖ½À´Ï´Ù.

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

´ÙÀ½ÀÇ INSERT¹®Àº Ä¡¼ö¸¦ °¡Áø Á¡ÀÌ µé¾î ÀÖ´Â Çà°ú Ä¡¼ö°¡ ¾ø´Â Á¡ÀÌ µé¾î ÀÖ´Â ÇàÀ» »ðÀÔÇÕ´Ï´Ù.

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

´ÙÀ½ÀÇ SELECT¹®°ú ÇØ´ç °á°ú ¼¼Æ®¿¡¼­ M ÇÔ¼ö´Â Á¡ÀÇ ÃøÁ¤°ªÀ» ³ª¿­ÇÕ´Ï´Ù. ù¹øÂ° Á¡¿¡´Â Ä¡¼ö°¡ ¾øÀ¸¹Ç·Î M ÇÔ¼ö°¡ NULLÀ» ¸®ÅÏÇÕ´Ï´Ù.

SELECT gid, db2gse.M (pt1) "The measure" FROM M_TEST
 
GID         The measure
----------- ------------------------
          1                        -
          2   +7.00000000000000E+000
 
  2 record(s) selected.


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