Ingest data into a dedicated SQL pool
In this article, you'll learn how to ingest data from an Azure Data Lake Gen 2 storage account into a dedicated SQL pool in Azure Synapse Analytics.
- Azure subscription: If you don't have an Azure subscription, create a free Azure account before you begin.
- Azure storage account: You use Azure Data Lake Storage Gen 2 as a source data store. If you don't have a storage account, see Create an Azure Storage account for steps to create one.
- Azure Synapse Analytics: You use a dedicated SQL pool as a sink data store.
Create linked services
In Azure Synapse Analytics, a linked service is where you define your connection information to other services. In this section, you'll add an Azure Synapse Analytics and Azure Data Lake Storage Gen2 linked service.
- Open the Azure Synapse Analytics UX and go to the Manage tab.
- Under External connections, select Linked services.
- To add a linked service, select New.
- Select the Azure Data Lake Storage Gen2 tile from the list and select Continue.
- Enter your authentication credentials. Account key, service principal, and managed identity are currently supported authentication types. Select test connection to verify your credentials are correct. Select Create when finished.
- Repeat steps 3-5, but instead of Azure Data Lake Storage Gen2, select the Azure Synapse Analytics tile and enter in the corresponding connection credentials. For Azure Synapse Analytics, SQL authentication, managed identity, and service principal are currently supported.
A pipeline contains the logical flow for an execution of a set of activities. In this section, you'll create a pipeline containing a copy activity that ingests data from ADLS Gen2 into a dedicated SQL pool.
- Go to the Integrate tab. Select on the plus icon next to the pipelines header and select Pipeline.
- Under Move and Transform in the activities pane, drag Copy data onto the pipeline canvas.
- Select on the copy activity and go to the Source tab. Select New to create a new source dataset.
- Select Azure Data Lake Storage gen2 as your data store and select continue.
- Select DelimitedText as your format and select continue.
- In the set properties pane, select the ADLS linked service you created. Specify the file path of your source data and specify whether the first row has a header. You can import the schema from the file store or a sample file. Select OK when finished.
- Go to the Sink tab. Select New to create a new sink dataset.
- Select Azure Synapse Analytics as your data store and select continue.
- In the set properties pane, select the Azure Synapse Analytics linked service you created. If you're writing to an existing table, select it from the dropdown. Otherwise, check Edit and enter in your new table name. Select OK when finished
- If you're creating a table, enable Auto create table in the table option field.
Debug and publish pipeline
Once you've finished configuring your pipeline, you can execute a debug run before you publish your artifacts to verify everything is correct.
- To debug the pipeline, select Debug on the toolbar. You see the status of the pipeline run in the Output tab at the bottom of the window.
- Once the pipeline can run successfully, in the top toolbar, select Publish All. This action publishes entities (datasets, and pipelines) you created to the Synapse Analytics service.
- Wait until you see the Successfully published message. To see notification messages, select the bell button on the top-right.
Trigger and monitor the pipeline
In this step, you manually trigger the pipeline published in the previous step.
- Select Add Trigger on the toolbar, and then select Trigger Now. On the Pipeline Run page, select Finish.
- Go to the Monitor tab located in the left sidebar. You see a pipeline run that is triggered by a manual trigger. You can use links in the Actions column to view activity details and to rerun the pipeline.
- To see activity runs associated with the pipeline run, select the View Activity Runs link in the Actions column. In this example, there's only one activity, so you see only one entry in the list. For details about the copy operation, select the Details link (eyeglasses icon) in the Actions column. Select Pipeline Runs at the top to go back to the Pipeline Runs view. To refresh the view, select Refresh.
- Verify your data is correctly written in the dedicated SQL pool.
For more information on data integration for Azure Synapse Analytics, see the Ingesting data into Azure Data Lake Storage Gen2 article.