SQL Server 2022 (16.x) and later versions support CREATE EXTERNAL TABLE AS SELECT (CETAS) to create an external table and then export, in parallel, the result of a Transact-SQL SELECT statement to Azure Data Lake Storage (ADLS) Gen2, Azure Storage Account V2, and S3-compatible object st...
SQL Server 2022(16.x)及更高版本支持 CREATE EXTERNAL TABLE AS SELECT(CETAS)创建外部表,然后并行导出到 Azure Data Lake Storage (ADLS) Gen2、Azure 存储帐户 V2 和 S3 兼容的对象存储的 Transact-SQL SELECT 语句的结果。 备注 适用于 Azure SQL 托管实例的 CETAS 的功能和安全性不同于 SQL Server ...
Azure Synapse Analytics 中無伺服器集區的 CETAS 功能和安全性與 SQL Server 不同。 如需詳細資訊,請參閱使用 Synapse SQL的 CETAS。 Transact-SQL 語法慣例 語法 syntaxsql複製 CREATEEXTERNALTABLE{ [ [database_name. [schema_name] . ] |schema_name. ]table_name}...
LOCATION must point to a folder and have a trailing/, for example:aggregated_data/. Applies to:SQL Server 2022 (16.x) and later prefix://path[:port]provides the connectivity protocol (prefix), path and optionally the port, to the external data source, where the result of the SELECT ...
read from the root folder, set the attribute<polybase.recursive.traversal>to 'false' in the core-site.xml configuration file. This file is located under<SqlBinRoot>\PolyBase\Hadoop\Confunder thebinroot of SQL Server. For example,C:\Program Files\Microsoft SQL Server\MSSQL13.XD14\MSSQL\Bin...
从SQL Server 2019 CU6 开始,"创建外部表"定义已扩展为包含 Rejected_Row_Location 参数。 此值表示将写入错误文件和拒绝行的外部数据源中的位置。 此选项只能用于对 Hadoop 类型外部数据源使用 DELIMITEDTEXT 文件格式的外部表。 CREATE EXTERNAL TABLE [dbo]。[Reject_Example] ( [Col_one]TINYINT NULL, [Col...
从SQL Server 2019 CU6 开始,"创建外部表"定义已扩展为包含 Rejected_Row_Location 参数。 此值表示将写入错误文件和拒绝行的外部数据源中的位置。 此选项只能用于对 Hadoop 类型外部数据源使用 DELIMITEDTEXT 文件格式的外部表。 CREATE EXTERN...
read from the root folder, set the attribute<polybase.recursive.traversal>to 'false' in the core-site.xml configuration file. This file is located under<SqlBinRoot>\PolyBase\Hadoop\Confunder thebinroot of SQL Server. For example,C:\Program Files\Microsoft SQL Server\MSSQL13.XD14\MSSQL\Bin...
For more information, seeWITH common_table_expression. NO_PERFORMANCE_SPOOL Applies to: SQL Server (starting with SQL Server 2016 (13.x)) and Azure SQL Database. Prevents a spool operator from being added to query plans (except for the plans when spool is required to guarantee valid update...
This CREATE FUNCTION statement registers a user-defined external table function with a database server. A user-defined external table function can be used in the FROM clause of a subselect. It returns a table to the subselect by returning one row at a time each time it is invoked. ...