javascript - Dynamodb错误: Scan Results don't filter to HASH even though I put in an Actual entry ID

Question

我已连接到这个本地我用 Lambda 使用此代码创建的发电机

console.log('Starting Function Now');
const AWS = require("aws-sdk");
const docClient = new AWS.DynamoDB.DocumentClient({region: 'us-east-1'})

exports.handler = function(event,ctx,callback){

    let scanParameters = {
        "TableName": "Accommodation_Request",
        "FilterExpression": "SSD_ID = :val",
        "ExpressionAttributeValues": {":val": {"N": "2"}},
        "ProjectionExpression": 'SSD_ID,AI_Org_ID'
    };

console.log(scanParameters)

    console.log("Your Student information");
    docClient.scan(scanParameters, function(err,data){
        if(err){
            callback(err, null)
        } else{
            callback(null,data)
        }
    });
};

运行 Lambda 后，我得到了这个结果

{
    "Items": [],
    "Count": 0,
    "ScannedCount": 5
}

问题:我无法返回 SSD_ID = 1 的正确扫描结果

Answer 1

可能是因为您在过滤器中使用字符串而不是数字，或者您有复合分区键