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Hi,
Yes, the key part is to get single quote while we are generating the dynamic sqls.
You can follow the solution provided by Flag or use '' twice single quote to get single quote in dynamic query.
Rewritten query and sample output:
rsdb=# select 'UNLOAD (''select * from '||schemaname||'.'||tablename||''') TO ''s3://bucket/schema/'||schemaname||'.'||tablename||''' iam_role ''arn:aws:iam::account_id:role/yourbucketrole'' region ''us-east-1'' allowoverwrite parallel off ; '
from pg_tables where schemaname='temp1';
?column?
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
UNLOAD ('select * from temp1.t2') TO 's3://bucket/schema/temp1.t2' iam_role 'arn:aws:iam::account_id:role/yourbucketrole' region 'us-east-1' allowoverwrite parallel off ;
(1 row)
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- 已提問 1 年前
- 已提問 1 年前
AWS 官方已更新 1 年前
Hi,
The tricky part here is dealing with all the single quotes - some you need in the output text while others delimit different parts of the query.
I think the below does the trick - see what you think:
select 'UNLOAD ('||''''||'select * from '||schemaname||'.'||tablename||''''||') TO '||''''||'s3://bucket/schema/'||schemaname||'.'||tablename||''''||' iam_role '||''''||'arn:aws:iam::dontpostthis:role/sam-redshift-role-for-s3'||''''||' region '||''''||'us-east-1'||''''||' allowoverwrite parallel off ; ' from pg_tables
The key part is the use of ||''''|| to output a single quote character in the output.
You probably don't want to post the full ARN by the way here - I've removed it in my query above - so you'll need to swap that back.
Cheers