The pg_enum table contains entries matching enum types to their associated values and labels. The internal representation of a given enum value is actually the OID of its associated row in pg_enum. The OIDs for a particular enum type are guaranteed to be ordered in the way the type should sort, but there is no guarantee about the ordering of OIDs of unrelated enum types.

    ColumnTypeReferencesDescription
    enumtypidoidpgtype.oidThe OID of the pg_type entry owning this enum value
    enumsortorderfloat4 The sort position of this enum value within its enum type
    enumlabelname The textual label for this enum value

    Parent topic: System Catalogs Definitions