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Use JayDeBeApi to access Phoenix Data in Python
Use standard Python scripting and the development environment of your choice to access live Phoenix data.
Access Phoenix data with Python scripts and standard SQL on any machine where Python and Java can be installed. You can use the CData JDBC Driver for Phoenix and the JayDeBeApi module to work with remote Phoenix data in Python. By using the CData Driver, you are leveraging a driver written for industry-proven standards to access your data in the popular Python language. This article shows how to use the driver to execute SQL queries to Phoenix and visualize Phoenix data with standard Python.
Use the JayDeBeApi module
JayDeBeApi is a Python library that serves as a JDBC (Java Database Connectivity) bridge, allowing Python programs to interact with Java databases, including CData JDBC Drivers. Use the pip install command to install the module:
pip install JayDeBeApi
Create the JDBC URL
Once you have JayDeBeApi installed, you are ready to work with Phoenix data in Python using SQL.
Connect to Apache Phoenix via the Phoenix Query Server. Set the Server and Port (if different from the default port) properties to connect to Apache Phoenix. The Server property will typically be the host name or IP address of the server hosting Apache Phoenix.
Authenticating to Apache Phoenix
By default, no authentication will be used (plain). If authentication is configured for your server, set AuthScheme to NEGOTIATE and set the User and Password properties (if necessary) to authenticate through Kerberos.
Built-in Connection String Designer
For assistance in constructing the JDBC URL, use the connection string designer built into the Phoenix JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.
java -jar cdata.jdbc.apachephoenix.jar
Fill in the connection properties and copy the connection string to the clipboard.
Below is a sample variable assignment, including a typical JDBC connection string:
jdbc_url = "jdbc:apachephoenix:Server=localhost;Port=8765;"
Access Phoenix data in Python
With the JDBC URL configured, you only need the absolute path to the JDBC driver JAR file, which is in the "lib" folder in the installation directory ("C:\Program Files\CData[product_name] 20XX\lib\cdata.jdbc.apachephoenix.jar" on Windows).
NOTE: If you haven't already, set the JAVA_HOME environment variable to the Java installation directory.
Use code similar to the follow to read and print data from Phoenix:
import jaydebeapi
#The JDBC connection string
jdbc_url = "jdbc:apachephoenix:Server=localhost;Port=8765;"
username = "****"
password = "****"
#The absolute Path to the JDBC driver JAR file, typically:
jdbc_driver_jar = "C:\Program Files\CData[product_name] 20XX\lib\cdata.jdbc.apachephoenix.jar"
conn = jaydebeapi.connect(
"cdata.jdbc.apachephoenix.ApachePhoenixDriver",
jdbc_url,
[username, password],
jdbc_driver_jar,
)
cursor = conn.cursor()
cursor.execute("SELECT * FROM MyTable;")
results = cursor.fetchall()
for row in results:
print(row)
cursor.close()
conn.close()
Free trial & more information
Download a free, 30-day trial of the CData JDBC Driver for Phoenix and start working with your live Phoenix data in Python. Reach out to our Support Team if you have any questions.
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Phoenix JDBC Driver
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