AWS DynamoDB 扫描 CLI

Question

I want to do this scan:

Through CLI:

aws dynamodb scan --table-name dev-XXX-transactions --select "*" --filter-expression "#idXXXTransaction = :idXXXTransaction" --expression-attribute-names "{\"#idXXXTransaction\": \"idXXXTransaction\"}"

But I'm not sure how can I do an "EXISTS" on a attribute, I know how to make an exact match. Any help?

Answer 1

This is specified by the attribute_exists() function. I believe your filter expression should be attribute_exists(idXXXTransaction) .

The available expression operators and functions are documented here .