AWS DMS S3 到 SQL 服务器迁移 - 将 DATETIME2 指定为 SQL 服务器数据类型

Question

我正在尝试使用 AWS 数据库迁移服务 (DMS) 从 S3 填充 SQL Server 2014 table。我有以下 S3 模式：

{
  "TableCount": "1",
  "Tables": [
    {
      "TableName": "employee",
      "TablePath": "public/employee/",
      "TableOwner": "",
      "TableColumns": [
        {
          "ColumnName": "Id",
          "ColumnType": "INT8",
          "ColumnNullable": "false",
          "ColumnIsPk": "true"
        },
        {
          "ColumnName": "HireDate",
          "ColumnType": "TIMESTAMP"
        },
        {
          "ColumnName": "Name",
          "ColumnType": "STRING",
          "ColumnLength": "20"
        }
      ],
      "TableColumnsTotal": "3"
    }
  ]
}

当我运行迁移任务时，我收到以下溢出错误，因为 SQL 服务器不允许将来自 S3 的值 2018-04-11 08:02:16.788027 插入 SQL 服务器 DATETIME 列。

我的问题是，有没有一种方法可以告诉 AWS DMS 将 TIMESTAMP S3 数据创建为 SQL 服务器中的 DATETIME2 列？ 注意： 每次迁移运行时，都会删除并重新创建 table。我可以通过在 SQL-Server 中手动创建 table 来解决这个问题，HireDate 为 DATETIME2，然后将 DMS 迁移 'target table preparation mode' 设置为 TRUNCATE 而不是 drop/create 但这对我当前的解决方案来说并不理想。

[TARGET_LOAD ]E: Failed to execute statement: 'INSERT INTO [public].[employee]([Id],[HireDate],[Name]) values (?,?,?)' [1022502] (ar_odbc_stmt.c:2456)
[TARGET_LOAD ]E: RetCode: SQL_ERROR SqlState: 22008 NativeError: 0 Message: [Microsoft][ODBC Driver 13 for SQL Server]Datetime field overflow. Fractional second precision exceeds the scale specified in the parameter binding. Line: 1 Column: 4 [1022502] (ar_odbc_stmt.c:2462)
[TARGET_LOAD ]E: Invalid input for column 'HireDate' of table 'public'.'employee' in line number 1.(sqlserver_endpoint_imp.c:2357)

Answer 1

解决方案是在 S3 架构中为 timestamp 列指定 "ColumnScale" 属性，这将确保 SQL 服务器目标列创建为 DATETIME2(7)即

{
  "TableCount": "1",
  "Tables": [
    {
      "TableName": "employee",
      "TablePath": "public/employee/",
      "TableOwner": "",
      "TableColumns": [
        {
          "ColumnName": "Id",
          "ColumnType": "INT8",
          "ColumnNullable": "false",
          "ColumnIsPk": "true"
        },
        {
          "ColumnName": "HireDate",
          "ColumnType": "TIMESTAMP",
          "ColumnScale": "7",
        },
        {
          "ColumnName": "Name",
          "ColumnType": "STRING",
          "ColumnLength": "20"
        }
      ],
      "TableColumnsTotal": "3"
    }
  ]
}

AWS DMS S3 到 SQL 服务器迁移 - 将 DATETIME2 指定为 SQL 服务器数据类型

AWS DMS S3 to SQL Server Migrations - Specify DATETIME2 as SQL Server data type

sql

sql-server

amazon-web-services

amazon-s3

aws-dms