rusoto_dynamodb

Struct QueryOutput

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pub struct QueryOutput {
    pub consumed_capacity: Option<ConsumedCapacity>,
    pub count: Option<i64>,
    pub items: Option<Vec<HashMap<String, AttributeValue>>>,
    pub last_evaluated_key: Option<HashMap<String, AttributeValue>>,
    pub scanned_count: Option<i64>,
}
Expand description

Represents the output of a Query operation.

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§consumed_capacity: Option<ConsumedCapacity>

The capacity units consumed by the Query operation. The data returned includes the total provisioned throughput consumed, along with statistics for the table and any indexes involved in the operation. ConsumedCapacity is only returned if the ReturnConsumedCapacity parameter was specified. For more information, see Provisioned Throughput in the Amazon DynamoDB Developer Guide.

§count: Option<i64>

The number of items in the response.

If you used a QueryFilter in the request, then Count is the number of items returned after the filter was applied, and ScannedCount is the number of matching items before the filter was applied.

If you did not use a filter in the request, then Count and ScannedCount are the same.

§items: Option<Vec<HashMap<String, AttributeValue>>>

An array of item attributes that match the query criteria. Each element in this array consists of an attribute name and the value for that attribute.

§last_evaluated_key: Option<HashMap<String, AttributeValue>>

The primary key of the item where the operation stopped, inclusive of the previous result set. Use this value to start a new operation, excluding this value in the new request.

If LastEvaluatedKey is empty, then the "last page" of results has been processed and there is no more data to be retrieved.

If LastEvaluatedKey is not empty, it does not necessarily mean that there is more data in the result set. The only way to know when you have reached the end of the result set is when LastEvaluatedKey is empty.

§scanned_count: Option<i64>

The number of items evaluated, before any QueryFilter is applied. A high ScannedCount value with few, or no, Count results indicates an inefficient Query operation. For more information, see Count and ScannedCount in the Amazon DynamoDB Developer Guide.

If you did not use a filter in the request, then ScannedCount is the same as Count.

Trait Implementations§

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impl Clone for QueryOutput

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fn clone(&self) -> QueryOutput

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for QueryOutput

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for QueryOutput

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fn default() -> QueryOutput

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for QueryOutput

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl PartialEq for QueryOutput

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fn eq(&self, other: &QueryOutput) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for QueryOutput

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Gets the TypeId of self. Read more
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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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type Output = T

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type Owned = T

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type Error = Infallible

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