The pg_enum catalog 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.
표 44-17. pg_enum Columns
| Name | Type | References | Description |
|---|---|---|---|
| enumtypid | oid | pg_type.oid | The OID of the pg_type entry owning this enum value |
| enumlabel | name | The textual label for this enum value |