DynamoDB query and operation examples
DynamoDB Query retrieves items using partition-key equality and optional sort-key conditions. Use GetItem for one complete key, and Scan when you need to examine items across the table. This directory links to query, write, batch and transaction examples by SDK and language.
Filters run after items are read, so they do not reduce read capacity consumption. Follow LastEvaluatedKey to retrieve the next page, even if a filtered page returns no items. Use the visual query builder to generate SDK or CLI parameters, or compare Query and Scan.
Boto3 (Python)
JavaScript SDK v3 (Node.js)
AWS CLI v2 (DynamoDB)
AWS SDK for Go v2
Java SDK 2.x Enhanced Client
AWS SDK for .NET (C#)
Frequently Asked Questions
How do I query DynamoDB?
Provide a partition-key value in a Query key condition, then optionally restrict the sort key. Query a secondary index when the access pattern uses different keys. Continue through every LastEvaluatedKey to read all results.
Can I query without a partition key?
Query requires partition-key equality on the table or index you query. Use an index whose keys fit the lookup, or use Scan to evaluate items across the table. A filter does not turn a scan into an indexed query.
Why does DynamoDB return fewer items than my Limit?
Limit counts evaluated items before filtering, and Query or Scan also stops at the 1 MB evaluation boundary. A page can contain no matching items and still have LastEvaluatedKey. Pass it as ExclusiveStartKey to continue.
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