How to create function that returns nothing

Question

I want to write a function with pl/pgsql. I\'m using PostgresEnterprise Manager v3 and using shell to make a function, but in the shell I must define retu

Answer 1

Use RETURNS void like below:

CREATE FUNCTION stamp_user(id int, comment text) RETURNS void AS $$
    #variable_conflict use_variable
    DECLARE
        curtime timestamp := now();
    BEGIN
        UPDATE users SET last_modified = curtime, comment = comment
          WHERE users.id = id;
    END;
$$ LANGUAGE plpgsql;

Answer 2

Functions must always return something, although you can use procedures like

do $$

and start with normal function like

declare
...

but if you still want to do a function just add void after returns.