The SE_MPolyFromShape() function
The SE_MPolyFromShape() function takes a shape of type polygon and a spatial reference ID to return an ST_MultiPolygon.
Syntax
SE_MPolyFromShape(s1 lvarchar, SRID integer)
Return type
ST_MultiPolygon
Example
The lots table stores the lot_id,
which uniquely identifies each lot, and the lot multipolygon
that contains the lot line geometry:
CREATE TABLE lots (lot_id integer,
lot ST_MultiPolygon);
This
code fragment populates the lots table:
/* Create the SQL insert statement to populate the lots table.
* The question marks are parameter markers that indicate the
* column values that will be inserted at run time. */
sprintf(sql_stmt,
"INSERT INTO lots (lot_id,lot)"
"VALUES(?, SE_MpolyFromShape(?, %d))", srid);
/* Prepare the SQL statement for execution. */
rc = SQLPrepare (hstmt, (unsigned char *)sql_stmt, SQL_NTS);
/* Bind the lot_id to the first parameter. */
pcbvalue1 = 0;
rc = SQLBindParameter (hstmt, 1, SQL_PARAM_INPUT, SQL_C_SLONG,
SQL_INTEGER, 0, 0,
&lot_id, 0, &pcbvalue1);
/* Bind the lot geometry to the second parameter. */
pcbvalue2 = lot_shape_len;
rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_BINARY,
SQL_INFX_UDT_LVARCHAR, lot_shape_len, 0,
lot_shape_buf, lot_shape_len, &pcbvalue2);
/* Execute the insert statement. */
rc = SQLExecute (hstmt);