ST_GeomCollection() constructor

Constructs a geometry collection representing the empty set.

ST_GeomCollection(LONG VARCHAR[, INT]) constructor

Constructs a geometry collection from a text representation.

ST_GeomCollection(LONG BINARY[, INT]) constructor

Constructs a geometry collection from WKB.

ST_GeomCollection(ST_Geometry,...) constructor

Constructs a geometry collection from a list of geometry values.