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Connect to Quandl Data in Squirrel SQL Client

Connect to Quandl data and execute queries in the Squirrel SQL Client.

The CData JDBC Driver for Quandl enables you to execute queries to Quandl data in tools like Squirrel SQL Client. In this article, you will create a JDBC data source for Quandl data and execute queries.

Add the JDBC Driver for Quandl

Follow the steps below to add the driver JAR.

  1. In Squirrel SQL, click Windows -> View Drivers.
  2. Click the plus icon to open the Add Driver wizard.
  3. In the Name box, enter a user-friendly name for the driver; for example, CData JDBC Driver for Quandl.
  4. In the Example URL box, enter jdbc:quandl:
  5. In the Extra Class Path tab, click Add.
  6. In the file explorer dialog that opens, select the JAR file for the driver, located in the lib subfolder of the installation directory.
  7. Click List Drivers to populate the Class Name menu with the class name for the driver, cdata.jdbc.quandl.QuandlDriver.

Define Connection Properties

Follow the steps below to save connection properties in the driver alias.

  1. Click Windows -> View Aliases.
  2. In the pane that lists the aliases, click the plus icon.
  3. In the Add Alias wizard that opens, the following fields are required for the JDBC driver:

    • Name: Enter a name for the alias; for example, CData Quandl Source.
    • Driver: Select the CData JDBC Driver for Quandl.
    • URL: Enter jdbc:quandl:
    • User Name: Enter the username, which is added to the JDBC URL.
    • Password: Enter the password, which is added to the JDBC URL.
  4. If you want to define any additional properties, click Properties.
  5. In the Driver properties tab of the dialog that appears, select the Use driver properties checkbox.
  6. In the Specify column, select the checkboxes for the required connection properties.

    Quandl uses an API key for authentication. See the help documentation for a guide to obtaining the APIKey property.

    Additionally, set the DatabaseCode connection property to the code identifying the Database whose Datasets you want to query with SQL. You can search the available Databases by querying the Databases view.

    Below is a typical connection string:

    jdbc:quandl:APIKey=abc123;DatabaseCode=WIKI;
  7. In the dialog that appears after you click OK, click connect to test the connection.

Discover Schemas and Query Quandl Data

After the metadata has loaded, a new tab for the Quandl data source is displayed. On the Objects subtab, you can discover schema information, such as the available tables and views.

To view table data, select the table on the Objects tab. The table data is then loaded in a grid on the Content tab.

To execute an SQL query, enter the query on the SQL tab and then click Run SQL (the runner icon). For example:

SELECT Date, Volume FROM AAPL