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.
Fields§
§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§
Source§impl Clone for QueryOutput
impl Clone for QueryOutput
Source§fn clone(&self) -> QueryOutput
fn clone(&self) -> QueryOutput
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read more