Question: How to count rows in DynamoDB?

Rafal Wilinski

Answered by Rafal Wilinski


In DynamoDB, you can use the Scan operation to count the number of rows in a table. The Scan operation returns all the items in a table, so you can count the number of items returned to get the total number of rows. However, it's important to remember that the Scan operation can be quite slow and expensive when dealing with large amounts of data.

Alternatively, Dynobase provides a more efficient way to count the number of rows in a table by providing a visual representation of the count of rows under the 'Schema' tab.

When you open the schema tab, you will see the count of rows in the table. This is visible per query, so if you have a filter or condition set, the count of rows will reflect the filter or condition.

It's also worth noting that in DynamoDB, the number of rows in a table is not equivalent to the number of items in a table. Because a single item can contain multiple attributes, a single item can represent multiple rows in a traditional relational database.

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