Querying external data in Azure Blob/Data Lake Storage

This feature enables your Azure SQL managed instance to execute T-SQL queries that read data from files in Parquet and CSV format, stored in Azure Data Lake Storage v2 or Azure Blob Storage, and to combine it in queries with locally stored relational data. In terms of the syntax, the feature resembles SQL Server’s PolyBase capabilities, currently limited to read-only access to files ... ................
................