Using PolyBase to Load Data to a Dedicated SQL Pool Table

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Using PolyBase to Load Data to a Dedicated SQL Pool Table

PolyBase allows you to read/write data in external storage using T-SQL. Using it, you can load the data into a dedicated SQL pool table in parallel. In this lab, we'll create various PolyBase components to load the data from a data lake file to a table in the dedicated SQL pool.

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Lab Info

Level

Intermediate

Last updated

Sep 03, 2025

Duration

45m

Challenge

Set Up the Environment
1. Create an Azure Synapse Analytics instance by defining a new Azure Data Lake Gen2 account.
2. Create a container named taxidata in the data lake account.
Challenge

Set Up Dedicated SQL Pool Instance

Within Synapse workspace, create a dedicated SQL pool instance named TaxiRidesWarehouse, with the performance level of DW100c.
Challenge

Define PolyBase Components to Read Data Lake File
1. Use Synapse's integrated UI to generate a script creating an external table on file TaxiRides.parquet.
2. Run the script to create the external table and read data from it.
  
  Note: For this objective, make sure you have downloaded the TaxiRides.parquet file that is located in this GitHub repository
Challenge

Create Table in Dedicated SQL Pool Using CTAS
1. Use the CTAS (CREATE TABLE AS SELECT) command to create a new table named TaxiRides and load data to it using the external table. The command is available in the Additional Information and Resources section.
2. Run a query on the TaxiRides table and verify the data load.

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