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ST_PointFromWKB

ST_PointFromWKB´Â Á¡ À¯ÇüÀÇ Àß ¾Ë·ÁÁø 2Áø Ç¥Çö½Ä ¹× °ø°£ ÂüÁ¶ ½Ã½ºÅÛ ½Äº°ÀÚ¸¦ ÃëÇØ Á¡À» ¸®ÅÏÇÕ´Ï´Ù.

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db2gse.ST_PointFromWKB(WKBPoint Blob(1M), SRID db2gse.coordref)

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db2gse.ST_Point

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´ÙÀ½ÀÇ ÄÚµå Á¶°¢Àº HAZARDOUS_SITES Å×À̺íÀ» »óÁÖ½Ãŵ´Ï´Ù.

À§Çè »çÀÌÆ®´Â ´ÙÀ½ÀÇ CREATE TABLE¹®À¸·Î ÀÛ¼ºµÇ´Â HAZARDOUS_SITES Å×ÀÌºí¿¡ ÀúÀåµË´Ï´Ù. Á¡À¸·Î Á¤ÀÇµÈ LOCATION Ä÷³Àº °¢ À§Çè »çÀÌÆ®ÀÇ Áö¸®Àû Áß½ÉÀÌ µÇ´Â À§Ä¡¸¦ ÀúÀåÇÕ´Ï´Ù.

CREATE TABLE HAZARDOUS_SITES (site_id   integer,
                              name      varchar(128),
                              location  db2gse.ST_Point);
 
/* site_id, name ¹× locationÀ» »óÁÖ½Ã۱â À§ÇÑ SQL insert¹®À»
   ÀÛ¼ºÇÕ´Ï´Ù. ¹°À½Ç¥´Â ¸Å°³º¯¼ö Ç¥½Ã¹®ÀÚÀ̸ç, ÀÌ´Â
   ·±Å¸ÀÓ¿¡ °Ë»öµÉ site_id, name ¹× location °ªÀ» ÁöÁ¤ÇÕ´Ï´Ù. */
strcpy (wkb_sql,"insert into HAZARDOUS_SITES (site_id, name, location)
values (?,?, db2gse.ST_PointFromWKB(cast(? as blob(1m)), 
db2gse.coordref()..srid(0)))");
 
/* SQL¹® Çڵ鿡 ´ëÇÑ ¸Þ¸ð¸®¸¦ ÇÒ´çÇϰí, ¸í·É¹® ÇÚµéÀ»
   ¿¬°á ÇÚµé°ú °áÇÕÇÕ´Ï´Ù. */
rc = SQLAllocStmt (handle, &hstmt);
 
/* ½ÇÇàÇÒ SQL¹®À» ÁغñÇÕ´Ï´Ù. */
rc = SQLPrepare (hstmt, (unsigned char *)wkb_sql, SQL_NTS);
 
/* site_id Á¤¼ö °ªÀ» ù¹øÂ° ¸Å°³º¯¼ö¿¡ ¹ÙÀεåÇÕ´Ï´Ù. */
pcbvalue1 = 0;
rc = SQLBindParameter (hstmt, 1, SQL_PARAM_INPUT, SQL_C_INTEGER,
   SQL_INTEGER, 0, 0, &site_id, 0, &pcbvalue1);
 
/* name varchar °ªÀ» µÎ ¹øÂ° ¸Å°³º¯¼ö¿¡ ¹ÙÀεåÇÕ´Ï´Ù. */
pcbvalue2 = name_len;
rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_CHAR,
     SQL_CHAR, 0, 0, name, 0, &pcbvalue2);
 
/* À§Ä¡ ¸ð¾çÀ» ¼¼ ¹øÂ° ¸Å°³º¯¼ö·Î ¹ÙÀεåÇÕ´Ï´Ù. */
pcbvalue3 = location_len;
rc = SQLBindParameter (hstmt, 3, SQL_PARAM_INPUT, SQL_C_BINARY,
     SQL_BLOB, location_len, 0, location_wkb, location_len, &pcbvalue3);
 
/* »ðÀÔ¹®À» ½ÇÇàÇÕ´Ï´Ù. */
rc = SQLExecute (hstmt);


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