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.
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.
- Same region: The Snowflake cluster must be in the same region as the default S3 bucket.
- 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 > Settings > 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.
|Database for Stage|
(optional) If you are using a Snowflake stage, you can specify a database other than the default one to host the stage.
If no value is specified, then your stage must be in the default database.
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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