aws lambda dynamodb nodejs scan
export const scanTable = async (tableName) => {
const params = {
TableName: tableName,
};
let scanResults = [];
let items;
do{
items = await documentClient.scan(params).promise();
items.Items.forEach((item) => scanResults.push(item));
params.ExclusiveStartKey = items.LastEvaluatedKey;
}while(typeof items.LastEvaluatedKey != "undefined");
return scanResults;
};dynamodb get all items nodejs
var docClient = new AWS.DynamoDB.DocumentClient();
var params = {
TableName: "users",
FilterExpression: "#user_status = :user_status_val",
ExpressionAttributeNames: {
"#user_status": "user_status",
},
ExpressionAttributeValues: { ":user_status_val": 'somestatus' }
};
docClient.scan(params, onScan);
var count = 0;
function onScan(err, data) {
if (err) {
console.error("Unable to scan the table. Error JSON:", JSON.stringify(err, null, 2));
} else {
console.log("Scan succeeded.");
data.Items.forEach(function(itemdata) {
console.log("Item :", ++count,JSON.stringify(itemdata));
});
// continue scanning if we have more items
if (typeof data.LastEvaluatedKey != "undefined") {
console.log("Scanning for more...");
params.ExclusiveStartKey = data.LastEvaluatedKey;
docClient.scan(params, onScan);
}
}
}Copyright © 2021 Codeinu
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