若要创建包含数组的 MongoDB 集合的外部表,应使用Azure Data Studio 的数据虚拟化扩展,基于 PolyBase ODBC Driver for MongoDB 检测到的架构生成 CREATE EXTERNAL TABLE 语句。 驱动程序会自动执行平展操作。 或者,可使用sp_data_source_objects (Transact-SQL)来检测集
若要创建包含数组的 MongoDB 集合的外部表,应使用Azure Data Studio 的数据虚拟化扩展,基于 PolyBase ODBC Driver for MongoDB 检测到的架构生成 CREATE EXTERNAL TABLE 语句。 驱动程序会自动执行平展操作。 或者,可使用sp_data_source_objects (Transact-SQL)来检测集合架构(列)并手动创建外部表。sp_data_source...
如果您打算使用此 EXTERNAL TABLE 將資料匯出至 Hadoop 或 Azure 儲存體外部資料來源,則指定的登入必須具有 LOCATION 中所指定路徑的寫入權限。 請注意,SQL Server 2022 (16.x) 不支援 Hadoop。 針對Azure Blob 儲存體,在 Azure 入口網站、Azure Blob 儲存體或 ADLS Gen2 儲存體帳戶中設定存取金鑰和共用存取簽...
Currently external tables are offered over data stored in Azure SQL Databases and are created with the CREATE EXTERNAL TABLE statement. Syntax Create_External_Table_Statement := 'CREATE' 'EXTERNAL' 'TABLE' ['IF' 'NOT' 'EXISTS'] Identifier '(' Column_Definition_List ')' Table_External_...
Create or alter Azure Blob Storage/ADLS external table Create or alter delta external table Manage external table mappings .show external table artifacts command Azure SQL external tables .drop external table command .show external table command ...
Azure SQL Managed Instance You can create apartitioned table or indexin SQL Server, Azure SQL Database, and Azure SQL Managed Instance by using SQL Server Management Studio or Transact-SQL. The data in partitioned tables and indexes is horizontally divided into units that can be spread across...
Database scoped global temporary tables in Azure SQL Database Global temporary tables in SQL Server (table names prefixed with ##) are stored in tempdb and shared among all user sessions across the entire SQL Server instance. Azure SQL Database supports global temporary tables that are also sto...
Azure SQL Managed Instance You can create apartitioned table or indexin SQL Server, Azure SQL Database, and Azure SQL Managed Instance by using SQL Server Management Studio or Transact-SQL. The data in partitioned tables and indexes is horizontally divided into units that can be spread across...
Use T-SQL to create external tables for Oracle is cumbersome and error-prone. You may refer the article if you are interested. Today I’m going to show you...
especially when you have a lot of data that is stored outside of Excel, like in a Microsoft Access or Microsoft SQL Server database, or in an Online Analytical Processing (OLAP) cube file. In that case, you’ll connect to the external data source, and then create ...