How to filter DynamoDB scans with multiple conditions?

DynamoDb Filter Expression: Filtering with Multiple Conditions

DynamoDb provides the Expression Builder tool to simplify complex query filtering. However, the standard implementation only allows for a single filter condition. To address this limitation and filter based on multiple conditions, you can utilize the And , Or , and Not methods available in the ConditionBuilder structure.

Consider the following code example:

<code class="go">cond1 := expression.Name("foo").Equal(expression.Value(5))
cond2 := expression.Name("bar").Equal(expression.Value(6))
expr, err := expression.NewBuilder().
    WithCondition(cond1.And(cond2)).
    Build()
if err != nil {
    fmt.Println(err)
}</code>

In this code, we use the And method to combine two filter conditions (cond1 and cond2). The resulting expr object represents the filtered scan. The Expression Builder API documentation provides detailed information on conditional operations. By employing this approach, you can effortlessly filter DynamoDb scans based on multiple conditions, enhancing the flexibility and precision of your data retrieval operations.

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