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Merge pull request #23717 from MladjoA/patch-6
Update PolyBase support statement.md
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azure-sql/managed-instance/transact-sql-tsql-differences-sql-server.md

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author: danimir
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ms.author: danil
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ms.reviewer: mathoma, bonova, danil
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ms.date: 04/19/2022
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ms.date: 08/15/2022
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ms.custom: seoapril2019, sqldbrb=1
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---
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- [FILESTREAM](/sql/relational-databases/blob/filestream-sql-server)
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- [FILETABLE](/sql/relational-databases/blob/filetables-sql-server)
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- [EXTERNAL TABLE](/sql/t-sql/statements/create-external-table-transact-sql) (except Polybase, in preview)
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- [EXTERNAL TABLE](/sql/t-sql/statements/create-external-table-transact-sql) (except PolyBase)
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- [MEMORY_OPTIMIZED](/sql/relational-databases/in-memory-oltp/introduction-to-memory-optimized-tables) (not supported only in General Purpose tier)
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For information about how to create and alter tables, see [CREATE TABLE](/sql/t-sql/statements/create-table-transact-sql) and [ALTER TABLE](/sql/t-sql/statements/alter-table-transact-sql).
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### PolyBase
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Work on enabling Polybase support in SQL Managed Instance is [in progress](https://feedback.azure.com/d365community/idea/ccc44856-3425-ec11-b6e6-000d3a4f0f84). In the meantime, as a workaround you can use linked servers to [a serverless SQL pool in Synapse Analytics](https://devblogs.microsoft.com/azure-sql/linked-server-to-synapse-sql-to-implement-polybase-like-scenarios-in-managed-instance/) or SQL Server to query data from files stored in Azure Data Lake or Azure Storage.
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For general information about PolyBase, see [PolyBase](/sql/relational-databases/polybase/polybase-guide).
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[Data virtualization with Azure SQL Managed Instance](data-virtualization-overview.md) enables you to execute Transact-SQL (T-SQL) queries against data from files stored in Azure Data Lake Storage Gen2 or Azure Blob Storage, and combine it with locally stored relational data using joins. Parquet and delimited text (CSV) file formats are directly supported. The JSON file format is indirectly supported by specifying the CSV file format where queries return every document as a separate row. It's possible to parse rows further using `JSON_VALUE` and `OPENJSON`. For general information about PolyBase, see [PolyBase](/sql/relational-databases/polybase/polybase-guide).
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### Replication
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