The following documentation comment has been logged on the website: Page: https://www.postgresql.org/docs/9.4/plpython-subtransaction.html Description:
The name "transaction" and all examples (update,etc.) are for transactions... It is not evident for commom reader that we can use `plpy.execute('select f()')` that is very important, the reuse of non-python functions. So. suggestion: say that there are a returning value from plpy, and showing an example of simple function call, like `y = plpy.execute('SELECT f()')`.