Is it possible to run text that is stored in a Postgresql database as Python code and have it update the database accordingly?
Is it possible to run text that is stored in a Postgresql database as Python code and have it update the database accordingly?
PL/Python serves as an extension for postgres allowing you to write functions in python. Depending on how you installed postgres, you may need to install the extension from your package manager or it might have been included already (e.g. through
apt-get install postgresql-plpython-9.1To enable the extension in your database, start by using psql to run:
CREATE EXTENSION plpythonu
You can now define functions with python and create a function to execute specific code like:
CREATE FUNCTION eval_python(code text) RETURNS integer AS $$
eval(code)
return 1
$$ LANGUAGE plpythonu;
Then, execute this function for every code field in my_table as shown below:
SELECT eval_python(code) FROM my_table;
For more details on working with the database from python, refer to the documentation on PL/python.
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