Amazon Redshift 將不再支援從修補程式 198 開始建立新的 Python UDFs。現有 Python UDF 將繼續正常運作至 2026 年 6 月 30 日。如需詳細資訊，請參閱[部落格文章](https://aws.amazon.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/)。
本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。
# SYS\_MV\_REFRESH\_HISTORY
結果包括所有具體化視觀表之重新整理歷史記錄的相關資訊。結果包括重新整理類型 (例如手動或自動)，以及最近重新整理的狀態。
所有使用者都可看見 SYS\_MV\_REFRESH\_HISTORY。超級使用者可以看見所有資料列；一般使用者只能看見自己的資料。如需詳細資訊，請參閱[系統資料表和檢視中資料的可見性](cm_chap_system-tables.md#c_visibility-of-data)。
## 資料表欄
| 欄名稱 | 資料類型 | 說明 |
| --- | --- | --- |
| user\_id | integer | 提交重新整理的使用者識別碼。 |
| session\_id | integer | 執行具體化視觀表之程序的處理程序識別碼。 |
| transaction\_id | bigint | 交易識別碼。 |
| database\_name | char(128) | 包含具體化視觀表的資料庫。 |
| schema\_name | char(128) | 具體化視觀表的結構描述。 |
| mv\_id | bigint | 具體化視觀表的物件 ID。 |
| mv\_name | char(128) | 具體化視觀表名稱。 |
| refresh\_type | char(32) | 重新整理的類型，例如手動或自動。 |
| status | text | 重新整理的狀態。如需狀態的詳細資訊，請參閱 [SVL\_MV\_REFRESH\_STATUS](r_SVL_MV_REFRESH_STATUS.md) 的狀態欄。 |
| start\_time | timestamp | 重新整理的開始時間。 |
| end\_time | timestamp | 重新整理的結束時間。 |
| duration | bigint | 重新整理具體化視觀表所花費的時間 (以微秒為單位)。 |
| consumer\_account | char(12) | 啟動重新整理的取用者叢集 AWS 的帳戶 ID。從資料共用設定中的取用者叢集啟動重新整理時，會填入此欄位。 |
| consumer\_region | char(32) | 啟動重新整理的取用者叢集 AWS 區域。從資料共用設定中的取用者叢集啟動重新整理時，會填入此欄位。 |
| consumer\_namespace | char(36) | 啟動重新整理之取用者叢集的命名空間識別符。從資料共用設定中的取用者叢集啟動重新整理時，會填入此欄位。 |
## 範例查詢
下列查詢顯示具體化視觀表的重新整理歷史記錄。
```
SELECT user_id,
session_id,
transaction_id,
database_name,
schema_name,
mv_id,
mv_name,
refresh_type,
status,
start_time,
end_time,
duration,
consumer_account,
consumer_region,
consumer_namespace
from sys_mv_refresh_history;
```
此查詢會傳回下列範例輸出：
```
user_id | session_id | transaction_id | database_name | schema_name | mv_id | mv_name | refresh_type | status | start_time | end_time | duration | consumer_account | consumer_region | consumer_namespace
---------+------------+----------------+---------------+----------------------------+--------+--------------------+----------------+------------------------------------------------------------------------------------------------------+----------------------------+----------------------------+-----------+------------------+-----------------+------------------------------------
1 | 1073815659 | 15066 | dev | test_stl_mv_refresh_schema | 203762 | mv_incremental | Manual | MV was already updated | 2023-10-26 15:59:20.952179 | 2023-10-26 15:59:20.952866 | 687 | | |
1 | 1073815659 | 15068 | dev | test_stl_mv_refresh_schema | 203771 | mv_nonincremental | Manual | MV was already updated | 2023-10-26 15:59:21.008049 | 2023-10-26 15:59:21.008658 | 609 | | |
1 | 1073815659 | 15070 | ext_db | producer_schema | 203779 | producer_mv | Manual | Refresh successfully updated MV incrementally | 2023-10-26 15:59:21.064252 | 2023-10-26 15:59:21.064885 | 633 | 0123456789 | us-east-1 | 623d8ff2-4391-4381-83d7-177caa6767af
1 | 1073815659 | 15074 | dev | test_stl_mv_refresh_schema | 203762 | mv_incremental | Manual | Refresh successfully updated MV incrementally | 2023-10-26 15:59:29.693329 | 2023-10-26 15:59:43.482842 | 13789513 | | |
1 | 1073815659 | 15076 | dev | test_stl_mv_refresh_schema | 203771 | mv_nonincremental | Manual | Refresh successfully recomputed MV from scratch | 2023-10-26 15:59:43.550184 | 2023-10-26 15:59:47.880833 | 4330649 | | |
1 | 1073815659 | 15078 | dev | test_stl_mv_refresh_schema | 203779 | mv_refresh_error | Manual | Refresh failed due to an internal error | 2023-10-26 15:59:47.949052 | 2023-10-26 15:59:52.494681 | 4545629 | | |
1 | 1073815659 | 15071 | dev | test_stl_mv_refresh_schema | 203778 | mv_test | Manual | Cascade refresh failed because materialized view test_stl_mv_refresh_schema.child was not refreshed. | 2023-10-26 15:30:21.432252 | 2023-10-26 15:30:21.432252 | 532 | | |
1 | 1073815659 | 15071 | dev | test_stl_mv_refresh_schema | 203761 | child | Manual | Refresh failed due to an internal error. | 2023-10-26 15:30:21.432252 | 2023-10-26 15:30:21.432252 | 532 | | |
1 | 1073815659 | 15069 | dev | test_stl_mv_refresh_schema | 203778 | mv_test | Manual | Cascade refresh skipped because materialized view test_stl_mv_refresh_schema.child was not refreshed.| 2023-10-26 15:21:43.550369 | 2023-10-26 15:21:43.550369 | 633
1 | 1073815659 | 15069 | dev | test_stl_mv_refresh_schema | 203761 | child | Manual | Refresh failed due to an internal error. | 2023-10-26 15:21:43.550369 | 2023-10-26 15:21:43.550369 | 633
(10 rows)
```