You have an Azure Data Lake Storage account that contains 1,000 10-MB CSV files and an Azure Synapse Analytics dedicated SQL pool named sql1. You need to load the files to sql1. The solution must…

While the `COPY` statement is a modern and often recommended syntax for loading data in Synapse Analytics, it leverages PolyBase or similar high-performance mechanisms internally; PolyBase represents the broader technology that fulfills the core requirements of parallel loading and external table interaction.

PolyBase is the underlying technology in Azure Synapse Analytics designed for high-throughput, parallel data ingestion from external sources like Azure Data Lake Storage. It can be used with commands like `CREATE EXTERNAL TABLE AS SELECT` or by enabling schema inference features to load data directly and efficiently without requiring explicit pre-definition of external tables, maximizing data load performance.