plx : Write PostgreSQL functions in the language you already know.

What plx is plx is a PostgreSQL extension that lets you write stored functions and triggers in the dialect you already know (the current set is listed below). When you run CREATE FUNCTION , plx transpiles the body to plpgsql and stores that plpgsql in pg_proc.prosrc . At run time the function is executed by PostgreSQL’s own plpgsql interpreter.