title: How to get function parameter lists (so I can drop a function)
body: <p>I want to get the SQL to drop a function in PostgreSQL. I write <code>DROP FUNCTION</code> and a get function name from <code>pg_proc</code>. That is not problem. However if I leave blank parameters it will not drop the function. </p>
  
  <p>I checked the manual and there is written then I have to identify the function with its parameters to drop it, eg <code>DROP FUNCTION some_func(text,integer)</code> not just <code>DROP FUNCTION some_func</code>.</p>
  
  <p>Where can I find the parameters?  In the function's row on in the <code>pg_proc</code> table there is no parameters. So how can I get the SQL to drop the function?</p>