MY_COLL_TYPES

MY_COLL_TYPES displays information about types of collections created by the current user. By default, it is accessible to all users. This view exists in the PG_CATALOG and SYS schemas.

**Table 1** MY_COLL_TYPES columns
Name	Type	Description
owner	character varying(128)	Owner of a collection.
type_name	character varying(128)	Name of a collection.
coll_type	character varying(128)	Description of a collection.
upper_bound	numeric	Not supported. Set it to NULL.
elem_type_mod	character varying(7)	Type modifier of an element.
elem_type_owner	character varying(128)	Owner of the element type on which the collection is based. This parameter is mainly used for user-defined types.
elem_type_name	character varying(128)	Name of the data type or user-defined type on which the collection is based.
length	numeric	Not supported. Set it to NULL.
precision	numeric	Not supported. Set it to NULL.
scale	numeric	Not supported. Set it to NULL.
character_set_name	character varying(44)	Not supported. Set it to NULL.
elem_storage	character varying(7)	Not supported. Set it to NULL.
nulls_stored	character varying(3)	Not supported. Set it to NULL.
char_used	character varying(1)	Not supported. Set it to NULL.