Question

我试图像这样在DynamoDB表中设置一个列表值：

{
  "TableName": "my-table",
  "Key": {
    "uid": {
      "S": "id-value"
    }
  },
  "UpdateExpression": " SET #actions = :actions",
  "ExpressionAttributeNames": {
    "#actions": "actions"
  },
  "ExpressionAttributeValues": {
    ":actions": {
      "L": [
        "one",
        "two"
      ]
    }
  },
  "ReturnValues": "ALL_NEW"
}

运行此命令时，出现以下错误：

{
  "message": "There were 8 validation errors:\n* InvalidParameterType: Expected params.ExpressionAttributeValues[':actions'].L[0] to be a structure\n* UnexpectedParameter: Unexpected key '0' found in     params.ExpressionAttributeValues[':actions'].L[0]\n* UnexpectedParameter: Unexpected key '1' found in params.ExpressionAttributeValues[':actions'].L[0]\n* UnexpectedParameter: Unexpected key '2' found in     params.ExpressionAttributeValues[':actions'].L[0]\n* InvalidParameterType: Expected params.ExpressionAttributeValues[':actions'].L[1] to be a structure\n* UnexpectedParameter: Unexpected key '0' found in     params.ExpressionAttributeValues[':actions'].L[1]\n* UnexpectedParameter: Unexpected key '1' found in params.ExpressionAttributeValues[':actions'].L[1]\n* UnexpectedParameter: Unexpected key '2' found in     params.ExpressionAttributeValues[':actions'].L[1]",
  "code": "MultipleValidationErrors",
  "errors": [
    {
      "message": "Expected params.ExpressionAttributeValues[':actions'].L[0] to be a structure",
      "code": "InvalidParameterType",
      "time": "2018-12-19T15:21:49.307Z"
    },
    {
      "message": "Unexpected key '0' found in params.ExpressionAttributeValues[':actions'].L[0]",
      "code": "UnexpectedParameter",
      "time": "2018-12-19T15:21:49.307Z"
    },
    {
      "message": "Unexpected key '1' found in params.ExpressionAttributeValues[':actions'].L[0]",
      "code": "UnexpectedParameter",
      "time": "2018-12-19T15:21:49.307Z"
    },
    {
      "message": "Unexpected key '2' found in params.ExpressionAttributeValues[':actions'].L[0]",
      "code": "UnexpectedParameter",
      "time": "2018-12-19T15:21:49.307Z"
    },
    {
      "message": "Expected params.ExpressionAttributeValues[':actions'].L[1] to be a structure",
      "code": "InvalidParameterType",
      "time": "2018-12-19T15:21:49.307Z"
    },
    {
      "message": "Unexpected key '0' found in params.ExpressionAttributeValues[':actions'].L[1]",
      "code": "UnexpectedParameter",
      "time": "2018-12-19T15:21:49.307Z"
    },
    {
      "message": "Unexpected key '1' found in params.ExpressionAttributeValues[':actions'].L[1]",
      "code": "UnexpectedParameter",
      "time": "2018-12-19T15:21:49.307Z"
    },
    {
      "message": "Unexpected key '2' found in params.ExpressionAttributeValues[':actions'].L[1]",
      "code": "UnexpectedParameter",
      "time": "2018-12-19T15:21:49.307Z"
    }
  ],
  "time": "2018-12-19T15:21:49.308Z"
}

我知道可以使用list_append添加单个条目，但是我需要设置整个列表... 我在做什么错了？

是否可以在单个查询中设置整个表？

预先感谢

Answer 1

结果是，缺少值的类型。这是正确的结构：

{
  "TableName": "my-table",
  "Key": {
    "uid": {
      "S": "id-value"
    }
  },
  "UpdateExpression": " SET #actions = :actions",
  "ExpressionAttributeNames": {
    "#actions": "actions"
  },
  "ExpressionAttributeValues": {
    ":actions": {
      "L": [
        {
          "S": "one"
        },
        {
          "S": "two"
        }
      ]
    }
  },
  "ReturnValues": "ALL_NEW"
}

无法在DynamoDB中设置LIST值

1 个答案: