创建一个具有全局二级索引错误的表

Question

我正在尝试使用nodejs内的javascript SDK创建具有全局二级索引的表：

var messagesTableParams = {
    TableName : "Messages",
    KeySchema: [
        { AttributeName: "to", KeyType: "HASH"},  //Partition key
        { AttributeName: "tm", KeyType: "RANGE" }  //Sort key
    ],
    AttributeDefinitions: [
        { AttributeName: "to", AttributeType: "N" },
        { AttributeName: "tm", AttributeType: "N" }
    ],
    ProvisionedThroughput: {
        ReadCapacityUnits: 10,
        WriteCapacityUnits: 10
    },
    GlobalSecondaryIndexes: [
        {
            IndexName: 'fr_indx',
            KeySchema: [
                { AttributeName: "fr", KeyType: "HASH"},  //Partition key
                { AttributeName: "tm", KeyType: "RANGE" }  //Sort key
            ],
            AttributeDefinitions: [
                { AttributeName: "fr", AttributeType: "N" },
                { AttributeName: "tm", AttributeType: "N" }
            ],
            Projection: {
                ProjectionType: 'KEYS_ONLY'
            },
            ProvisionedThroughput: {
                ReadCapacityUnits: 10,
                WriteCapacityUnits: 10
            }
        }
    ]
};

dynamodb.createTable(messagesTableParams, function(err, data) {
    if (err) {
        console.error("Unable to create table. Error JSON:", JSON.stringify(err, null, 2));
    } else {
        console.log("Created table. Table description JSON:", JSON.stringify(data, null, 2));
    }
});

但是我一直收到以下错误，并且未创建表：

无法创建表。错误JSON：{“ message”：“在params.GlobalSecondaryIndexes [0]中找到了意外的键'AttributeDefinitions'，
”“ code”：“ UnexpectedParameter”，“ time”：“ 2016-01-07T18：51：11.659Z”}

Answer 1

我终于想通了！我需要从全局索引中删除AttributeDefinitions，然后将“ fr”属性的新条目添加到表的AttributeDefinition中！

我要感谢所有在这段艰难时期为我提供支持，并为我的计算机容忍我无法原谅的语言的人们！