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Get the Report →Using the CData ODBC Driver for Bullhorn CRM in PyCharm
Connect to Bullhorn CRM as an ODBC data source in PyCharm using the CData ODBC Driver for Bullhorn CRM.
The CData ODBC Drivers can be used in any environment that supports loading an ODBC Driver. In this tutorial we will explore using the CData ODBC Driver for Bullhorn CRM from within PyCharm. Included are steps for adding the CData ODBC Driver as a data source, as well as basic PyCharm code to query the data source and display results.
To begin, this tutorial will assume that you have already installed the CData ODBC Driver for Bullhorn CRM as well as PyCharm.
Add Pyodbc to the Project
Follow the steps below to add the pyodbc module to your project.
- Click File -> Settings to open the project settings window.
- Click Project Interpreter from the Project: YourProjectName menu.
- To add pyodbc, click the + button and enter pyodbc.
- Click Install Package to install pyodbc.

Connect to Bullhorn CRM
You can now connect with an ODBC connection string or a DSN. See the Getting Started section in the CData driver documentation for a guide to creating a DSN on your OS.
Begin by providing your Bullhorn CRM account credentials in the following:
- DataCenterCode: Set this to the data center code which responds to your data center. Refer to the list of data-center-specific Bullhorn API URLs: https://bullhorn.github.io/Data-Center-URLs/
If you are uncertain about your data center code, codes like CLS2, CLS21, etc. are cluster IDs that are contained in a user's browser URL (address bar) once they are logged in.
Example: https://cls21.bullhornstaffing.com/BullhornSTAFFING/MainFrame.jsp?#no-ba... indicates that the logged in user is on CLS21.
Authenticating with OAuth
Bullhorn CRM uses the OAuth 2.0 authentication standard. To authenticate using OAuth, create and configure a custom OAuth app. See the Help documentation for more information.
Below is the syntax for a DSN:
[CData BullhornCRM Source]
Driver = CData ODBC Driver for Bullhorn CRM
Description = My Description
DataCenterCode = CLS33
OAuthClientId = myoauthclientid
OAuthClientSecret = myoauthclientsecret
Execute SQL to Bullhorn CRM
Instantiate a Cursor and use the execute method of the Cursor class to execute any SQL statement.
import pyodbc
cnxn = pyodbc.connect('DRIVER={CData ODBC Driver for BullhornCRM};DataCenterCode = CLS33;OAuthClientId = myoauthclientid;OAuthClientSecret = myoauthclientsecret;')
cursor = cnxn.cursor()
cursor.execute("SELECT Id, CandidateName FROM Candidate WHERE CandidateName = 'Jane Doe'")
rows = cursor.fetchall()
for row in rows:
print(row.Id, row.CandidateName)
After connecting to Bullhorn CRM in PyCharm using the CData ODBC Driver, you will be able to build Python apps with access to Bullhorn CRM data as if it were a standard database. If you have any questions, comments, or feedback regarding this tutorial, please contact us at [email protected].