amazon-dynamodb - 如何在 partiqL DynamodB 中使用 IN 语句

Question

我想转换这个查询 select lKey from KeyMapping where gKey in ['A#1','A#2','A#3'];

我有一个包含 A#1、A#2 和 A#3 的列表

使用 PartiQL 从 DynamoDB 中提取记录的 Java 代码

Answer 1

@Autowired
private AmazonDynamoDB client;


List<String> paramList = new ArrayList<>(); //List of Parameters
paramList.add("A#1");
paramList.add("A#2");
paramList.add("A#3");

ExecuteStatementRequest request = new ExecuteStatementRequest();
String[] placeholders = new String[paramList.size()];
Arrays.fill(placeholders, "?");
String commalist = Arrays.stream(placeholders).collect(Collectors.joining(","));
        request.setStatement("select * from "+appConfigs.getBoclipsTableName()+" where id in ("+commalist+")");

List<AttributeValue> parameters = new ArrayList<>();
for(String videoId: videoIds){
    parameters.add(new AttributeValue(videoId));
}
System.out.println(client.executeStatement(request).toString());