This section describes how to create a connection to your Snowflake datawarehouse.
- Snowflake is an S3-based data warehouse service hosted in the cloud. Auto-scaling, automatic failover, and other features simplify the deployment and management of your enterprise's data warehouse. For more information, see https://www.snowflake.com.
- S3 base storage layer: Snowflake access requires installation of Trifacta software in the AWS infrastructure and use of S3 as the base storage layer, which must be enabled. See Set Base Storage Layer.
- Same region: The Snowflake cluster must be in the same region as the default S3 bucket.
Integration: Your Trifacta instance is connected to an EMR cluster.
NOTE: EMRFS Consistency View must be enabled.
See Configure for EMR.
Deployment: Trifacta platform is deployed in EC2.
- PUBLIC schema: If you do not create an external staging database:
PUBLICschema is required in your default database.
- If you do not provide a stage database, then a temporary stage is created for you under the
PUBLICschema in the default database.
- S3 bucket: The user-created stage must point to the same S3 bucket as the default bucket in use by Trifacta Wrangler Enterprise.
- You cannot perform ad-hoc publication to Snowflake.
- SSO connections are not supported.
You can create Snowflake connections through the following methods.
Create through application
Any user can create a Snowflake connection through the application.
- Login to the application.
- In the menu, click Settings menu > Connections.
- In the Create Connection page, click the Snowflake connection card.
Specify the properties for your Snowflake database connection. The following parameters are specific to Snowflake connections:
NOTE: In Snowflake connections, property values are case-sensitive. Snowflake-related locations are typically specified in capital letters.
Snowflake account to use. Suppose your hostname is the following:
Your account name is the following:
|Warehouse||The name of the warehouse to which to connect|
If you have deployed a Snowflake stage for managing file conversion to tables, you can enter its name here. A stage is a database object that points to an external location on S3. It must be an external stage containing access credentials.
If a stage is used, then this value is typically the schema and the name of the stage. Example value:
If a stage is not specified, a temporary stage is created using the current user's AWS credentials.
NOTE: Without a defined stage, you must have write permissions to the database from which you import. This database is used to create the temporary stage.
For more information on stages, see https://docs.snowflake.net/manuals/sql-reference/sql/create-stage.html.
For more information, see Create Connection Window.
Disable SSL connections
By default, connections to Snowflake use SSL. To disable, please add the following string to your Connect String Options:
Save your changes.
Connect through proxy
If you require connection to Snowflake through a proxy server, additional Connect String Options are required. For more information, see https://docs.snowflake.net/manuals/user-guide/jdbc-configure.html#specifying-a-proxy-server-in-the-jdbc-connection-string.
Create via API
For more information, see API Connections Create v4.
Import a dataset from Snowflake. Add it to a flow, and specify a publishing action back to Snowflake. Run a job.For more information, see Verify Operations.
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