Constructs a multi-curve from a list of curve values.
SELECT NEW ST_MultiCurve( NEW ST_LineString('LineString (0 0, 1 1)' ) )
The following example returns the result MultiCurve ((0 0, 1 1), CircularString (0 0, 1 1, 2 0)).
SELECT NEW ST_MultiCurve( NEW ST_LineString('LineString (0 0, 1 1)' ), NEW ST_CircularString( 'CircularString( 0 0, 1 1, 2 0)' ) )
SQL/MM (ISO/IEC 13249-3: 2006) Vendor extension