Call plpgsql Function from a PL/Python Function in PostgreSQL

Question

Is is possible to call a plpgsql function (or any PostgreSQL function) from a PL/Python function?

So, something like this:

CREATE FUNCTION somefunc() RETURNS void AS $$
DECLARE
 ...
BEGIN
 ...
END;
$$ LANGUAGE plpgsql;

And then use it here

CREATE FUNCTION pythonFunc() RETURNS void AS $$
 ...
 someFunc() #postgreSQL function
 ...
$$ LANGUAGE plpythonu;

Answer 1

create function plpython_function()
returns void as $$
 plpy.execute('select plpgsql_function()')
$$ language plpythonu;

PL/Python Database Access

• PhilHibbs: How would you pass arguments on from the plpython_function to the plpgsql_function? The short answer to this would be, "import plpy and use plpy.quote_literal". My reply to that would be, "that's all very well, but 8.2 (actually, Greenplum) does not have plpy.quote_literal, it is actually quote_literal that I want to call!" Bootstrap problem.