Returns an ST_CurvePolygon value, which is transformed from a LONG BINARY value containing the WKB representation of an ST_CurvePolygon
Syntax[DBO.]ST_CPolyFromWKB(wkb[, srid])
Parameters| Name | Type | Description |
|---|---|---|
|
wkb |
LONG BINARY |
The WKB representation. |
|
srid |
INT |
The SRID of the result. If not specified, the default is 0. |
ReturnsST_CurvePolygon Returns an ST_CurvePolygon value created from the input string.
The spatial reference system identifier of the result is the given by parameter srid.
The ST_CPolyFromWKB function is not present by default in newly created databases. Use the sa_install_feature system procedure to install the spatial SQL compatibility functions. See sa_install_feature system procedure.
RemarksThe ST_CPolyFromWKB function is equivalent to the following:
CREATE FUNCTION DBO.ST_CPolyFromWKB( wkb LONG BINARY, srid INT DEFAULT 0 )
RETURNS ST_CurvePolygon
BEGIN
DECLARE geo ST_Geometry;
set geo = ST_Geometry::ST_GeomFromWKB( wkb, srid );
RETURN CAST( geo AS ST_CurvePolygon);
END |
See also Standards and compatibilitySQL/MM (ISO/IEC 13249-3: 2006) 8.2.9
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