ddb_query.ts - AWS Code Sample

ddb_query.ts

/* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. SPDX-License-Identifier: Apache-2.0 ABOUT THIS NODE.JS EXAMPLE: This example works with AWS SDK for JavaScript version 3 (v3), which is pending release. The preview version of the SDK is available at https://github.com/aws/aws-sdk-js-v3. This example is in the 'AWS SDK for JavaScript v3 Developer Guide' at https://docs.aws.amazon.com/sdk-for-javascript/v3/developer-guide/dynamodb-example-query-scan.html. Purpose: ddb_query.ts demonstrates how to find items in an Amazon DynamoDB table. Inputs (replace in code): - REGION Running the code: ts-node ddb_query.ts */ // Import required AWS SDK clients and commands for Node.js const { DynamoDBClient, QueryCommand } = require("@aws-sdk/client-dynamodb"); // Set the AWS Region const REGION = "region"; //e.g. "us-east-1" // Set the parameters const params = { KeyConditionExpression: "Season = :s and Episode > :e", FilterExpression: "contains (Subtitle, :topic)", ExpressionAttributeValues: { ":s": { N: "1" }, ":e": { N: "2" }, ":topic": { S: "SubTitle" }, }, ProjectionExpression: "Episode, Title, Subtitle", TableName: "EPISODES_TABLE", }; // Create DynamoDB service object const dbclient = new DynamoDBClient(REGION); const run = async () => { try { const results = await dbclient.send(new QueryCommand(params)); results.Items.forEach(function (element, index, array) { console.log(element.Title.S + " (" + element.Subtitle.S + ")"); }); } catch (err) { console.error(err); } }; run();