An ST_MultiCurve is a collection of zero or more ST_Curve values, and all of the curves are within the spatial reference system.
Methods of ST_MultiCurve:
All methods of ST_GeomCollection type can also be called on a ST_MultiCurve type:
All methods of ST_Geometry type can also be called on a ST_MultiCurve type:
SQL/MM (ISO/IEC 13249-3: 2006) 9.3
ST_MultiCurve constructor
ST_IsClosed method
ST_Length method
ST_MultiCurveAggr method
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