Contents:
Contents:
Tip: You can create connections to databases of this type that are managed by your enterprise or are hosted in cloud infrastructure. The required configuration is the same. The cloud-based version is labeled on Cloud SQL. In the Create Connection dialog, you can search for that term.
If you are connecting the Dataprep by Trifacta Cloud to any relational source of data, such as Redshift or Oracle, you must add the Dataprep by Trifacta Service to your whitelist for those resources. See Whitelist Platform Service.
Supported Versions: 9.3.10
- Read: Supported
- Write: Supported
Configure
To create this connection:
- In the Import Data page, click the Plus sign. Then, select the Relational tab. Click the Alloy DB card.
- You can also create connections through the Connections page. See Connections Page.
Modify the following properties as needed:
| Property | Description |
|---|---|
| Host | Enter your fully qualified hostname. Example: my.postgres.server |
| Port | Set this value to 5432. |
| Connect String Options | Insert any additional connection parameters, if needed. See below. |
| Enable SSL | Select the checkbox to enable SSL connections to the database. NOTE: Additional configuration may be required in the database server. For more information, please consult the documentation that was provided with the distribution. |
| Database | Enter the name of the database on the server to which to connect. |
| User Name | Username to use to connect to the database. |
| Password | Password associated with the above username. |
| Test Connection | After you have defined the connection credentials type, credentials, and connection string, you can validate those credentials. |
| Advanced options: Default Column Data Type Inference | Set to |
| Advanced options: Enable SSH Tunneling | If available, the SSH tunneling options allow you to configure SSH tunneling authentication between the Dataprep by Trifacta application and your database. NOTE: SSH tunneling is available on a per-connection basis. It may not be available for all connections. For more information, see Configure SSH Tunnel Connectivity. |
| Connection Name | Display name of the connection |
| Connection Description | Description of the connection, which appears in the application. |
Connection URL
The properties that you provide are inserted into the following URL, which connects Dataprep by Trifacta Cloud to the connection:
jdbc:postgresql://<host>:<port>/<database><connect-string-options>
Connect string options
The connect string options are optional. If you are passing additional properties and values to complete the connection, the connect string options must be structured in the following manner:
?<prop1>=<val1>&<prop2>=<val2>...
where:
<prop>: the name of the property<val>: the value for the property
delimiters:
?: any set of connect string options must begin with a question mark.&: all additional property names must be prefixed with an ampersand (&).=: property names and values must be separated with an equal sign (=).
Driver Information
This connection uses the following driver:
- Driver name:
org.postgresql.Driver - Driver version:
org.postgresql:postgresql:42.1.1 - Driver documentation:https://jdbc.postgresql.org/documentation/head/index.html
Create via API
This connection can also be created using the API.
- Type:
jdbc - Vendor:
postgres
For more information, see Dataprep by Trifacta: API Reference docs
Troubleshooting
| Error message | Description |
|---|---|
| Class 08 Connection Exception | Connection failure: the web client or Alteryx node is unable to establish a connection. |
| Class 28 Invalid Authorization Specification | Typically, this error occurs when an invalid password has been submitted. Tip: Use the Test Connection button to validate your credentials. |
For more information on error messages for this connection type, see https://www.postgresql.org/docs/9.3/errcodes-appendix.html.
NOTE: Please note the version number in the URL above.
Use
For more information, see Database Browser.
For more information on interacting with data, see Using Databases.
SQL Syntax
The following syntax requirements apply to this connection.
Object delimiter: double-quote
Example syntax:
Double quotes required around database, table names, and column names.
SELECT "column1","column2" FROM "databaseName"."tableName";
For more information on SQL in general, see Supported SQL Syntax.
Data Conversion
For more information on how values are converted during input and output with this database, see Postgres Data Type Conversions.
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