Constructs a GeomCollection value from the geometry arguments.
GeomCollection() returns all the proper geometries contained in the arguments even if a nonsupported geometry is present.
GeomCollection() with no arguments is permitted as a way to create an empty geometry. Also, functions such as ST_GeomFromText() that accept WKT geometry collection arguments understand both OpenGIS 'GEOMETRYCOLLECTION EMPTY' standard syntax and MySQL 'GEOMETRYCOLLECTION()' nonstandard syntax.
GeomCollection() and GeometryCollection() are synonymous, with GeomCollection() the preferred function.
GeometryCollection() returns all the proper geometries contained in the arguments even if a nonsupported geometry is present.
GeometryCollection() with no arguments is permitted as a way to create an empty geometry. Also, functions such as ST_GeomFromText() that accept WKT geometry collection arguments understand both OpenGIS 'GEOMETRYCOLLECTION EMPTY' standard syntax and MySQL 'GEOMETRYCOLLECTION()' nonstandard syntax.