ST_GMLToSQL — Return a specified ST_Geometry value from GML representation. This is an alias name for ST_GeomFromGML
geometry ST_GMLToSQL(text  geomgml);
geometry ST_GMLToSQL(text  geomgml, integer  srid);
            
            This method implements the SQL/MM specification.
         SQL-MM 3: 5.1.50 (except for curves support).
Availability: 1.5, requires libxml2 1.6+
Enhanced: 2.0.0 support for Polyhedral surfaces and TIN was introduced.
Enhanced: 2.0.0 default srid optional parameter added.