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How to use ExclusiveStartKey
xiepeng edited this page Jan 22, 2012
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In some cases the result set is too big, DynamoDB will return only a subset of the results. The LastEvaluatedKey can be passed to the next query as ExclusiveStartKey.
var scanDynamoDB = function(query) {
dynamoDB.scan( query , function(response, result) {
result.on('ready', function(data){
console.log(data.Items); // Print out the subset of results.
if(data.LastEvaluatedKey) { // Result is incomplete; there is more to come.
query.ExclusiveStartKey = data.LastEvaluatedKey;
scanDynamoDB(query);
};
});
});
}
var query = {"TableName":"Table1",
"Limit": 2, // This request asks for 2 items at a time
"ScanFilter":{},
"AttributesToGet":["Color", "Weight", "Name"]
};
scanDynamoDB(query);