重新載入已卸載資料

PDFRSS

若要重新載入卸載操作的結果，您可以使用 COPY 命令。

下列範例會顯示一個簡單的案例，其中會使用資訊清單檔案卸載、截斷和重新載入 VENUE 表格。

unload  ('select * from venue order by venueid')
to 's3://amzn-s3-demo-bucket/tickit/venue/reload_' 
iam_role 'arn:aws:iam::0123456789012:role/MyRedshiftRole' 
manifest 
delimiter '|';

truncate venue;

copy venue 
from 's3://amzn-s3-demo-bucket/tickit/venue/reload_manifest' 
iam_role 'arn:aws:iam::0123456789012:role/MyRedshiftRole'
manifest 
delimiter '|';

重新載入後，VENUE 表格看起來如下：

select * from venue order by venueid limit 5;

 venueid |         venuename         |  venuecity  | venuestate | venueseats
---------+---------------------------+-------------+------------+-----------
       1 | Toyota Park               | Bridgeview  | IL         |          0
       2 | Columbus Crew Stadium     | Columbus    | OH         |          0
       3 | RFK Stadium               | Washington  | DC         |          0
       4 | CommunityAmerica Ballpark | Kansas City | KS         |          0
       5 | Gillette Stadium          | Foxborough  | MA         |      68756
(5 rows)