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.
|enumtypid||oid||pgtype.oid||The OID of the pg_type entry owning this enum value|
|enumlabel||name||The textual label for this enum value|