How to export a dynamodb table as a csv through aws-cli ( without using pipeline)

问题

I am new to aws-cli and I am trying to export my dynamodb table as a csv so that i can import it directly into postgresql. Is there a way to do that using aws-cli ?

So far i have came across this command aws dynamodb scan --table-name . But this does not provide an option of a csv export. Also, through this command I can get the output on my command prompt but I am not sure how to write it in a file.

回答1:

If all items have the same attributes, e.g. id and name both of which are strings, then run:

aws dynamodb scan \
    --table-name mytable \
    --query "Items[*].[id.S,name.S]" \
    --output text

That would give tab-separated output. You can redirect this to file using > output.txt, and you could then easily convert tabs into commas for csv.

Another option is the DynamoDBtoCSV project at github.

回答2:

For localhost dynamodb:

$aws dynamodb scan --table-name AOP --region us-east-1 --endpoint-url
http://localhost:8000 --output json > /home/ohelig/Desktop/a.json

For dynamodb:

$aws dynamodb scan --table-name AOP --region us-east-1 --output json > /home/ohelig/Desktop/a.json

Then Convert JSON to CSV or whatever.

I have modified above answer to make it clear.

回答3:

You can use jq convert the json output given by aws cli to csv

aws dynamodb scan --table-name mytable --query "Items[*].[id.S,name.S]" --output json | jq -r '.[] | @csv' > dump.csv

来源：https://stackoverflow.com/questions/33357821/how-to-export-a-dynamodb-table-as-a-csv-through-aws-cli-without-using-pipeline