AWS Code Examples Repository namespacePartiQL_Basics_Scenario{publicclassPartiQLMethods{privatestaticreadonlyAmazonDynamoDBClient Client =newAmazonDynamoDBClient();///<summary>///Inserts movies imported from a JSON file into the movie table by///using an Amazon DynamoDB PartiQL INSERT statemen...
Example The following AWS Command Line Interface (AWS CLI) example scans theThreadtable and returns only the items that were last posted to by a particular user. aws dynamodb scan \ --table-name Thread \ --filter-expression "LastPostedBy = :name" \ --expression-attribute-values '{":name...
对于了解Amazon DynamoDB的人士来说,单表设计的想法是目前最令人费解的概念之一。与每个实体有一个表的关系概念不同,DynamoDB 表通常在一个表中包含多个不同的实体。 您可以阅读 DynamoDB 文档,观看 re:Invent 讲座或其他视频,或者查看我的书,了解 DynamoDB 中使用单表设计的一些设计模式。我想在更高层次上探讨这...
A well-designed single table will not only reduce the number of requests for an access pattern, but will service many different access patterns. The challenge comes when we need to ask more complex questions of our data, for example, what was the year-on-year quar...
Let us see an example. //Save-Update TransactionWriteRequest transactionWriteRequest = new TransactionWriteRequest(); transactionWriteRequest.addPut(actionMovie); transactionWriteRequest.addPut(thrillerMovie); mapper.transactionWrite(transactionWriteRequest); //Load TransactionLoadRequest transactionLoadRequest ...
Take a look at this UpdateCommand example straight from the AWS documentation: await documentClient.send( new UpdateCommand({ TableName: 'Music', Key: { // 👇 No type-safety on the Primary Key artist: 'Acme Band', songTitle: 'Happy Day' }, // 👇 Complex string expressions (+ still...
Add a new item to your table, providing the previously created connection. constuser=awaitputItem<User>({dynamoDb:dynamo,table:'user-table-staging',item:{userId:'123',email:'example@example.com',name:'Alice'},}); Getting a single item ...
TableName: !Ref SampleTable Environment: Variables: # Make table name accessible as environment variable from function code during execution SAMPLE_TABLE: !Ref SampleTable Events: Api: Type: Api Properties: Path: / Method: POST # Simple syntax to create a DynamoDB table with a singleattributepr...
For example, MongoDB’s aggregation pipeline is a powerful tool for performing analytics and statistical analysis in real-time and generating pre-aggregated reports for dashboarding. Additionally, MongoDB will give you a few extra things which I think are pretty cool: Document Size - MongoDB han...
My favorite quote on this comes from Forrest Brazeal's excellent walkthrough on single-table design: [A] well-optimized single-table DynamoDB layout looks more like machine code than a simple spreadsheet Spreadsheets are easy for analytics, whereas a single-table design takes some work to unwind...