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Using the CData ODBC Driver for Greenplum in PyCharm

Connect to Greenplum as an ODBC data source in PyCharm using the CData ODBC Driver for Greenplum.

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 Greenplum 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 Greenplum as well as PyCharm.

Add Pyodbc to the Project

Follow the steps below to add the pyodbc module to your project.

  1. Click File -> Settings to open the project settings window.
  2. Click Project Interpreter from the Project: YourProjectName menu.
  3. To add pyodbc, click the + button and enter pyodbc.
  4. Click Install Package to install pyodbc.

Connect to Greenplum

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.

To connect to Greenplum, set the Server, Port (the default port is 5432), and Database connection properties and set the User and Password you wish to use to authenticate to the server. If the Database property is not specified, the default database for the authenticate user is used.

Below is the syntax for a DSN:

[CData Greenplum Source] Driver = CData ODBC Driver for Greenplum Description = My Description User = user Password = admin Database = dbname Server = 127.0.0.1 Port = 5432

Execute SQL to Greenplum

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 Greenplum};User = user;Password = admin;Database = dbname;Server = 127.0.0.1;Port = 5432;') cursor = cnxn.cursor() cursor.execute("SELECT Freight, ShipName FROM Orders WHERE ShipCountry = 'USA'") rows = cursor.fetchall() for row in rows: print(row.Freight, row.ShipName)

After connecting to Greenplum in PyCharm using the CData ODBC Driver, you will be able to build Python apps with access to Greenplum data as if it were a standard database. If you have any questions, comments, or feedback regarding this tutorial, please contact us at support@cdata.com.