Re: Function PostgreSQL 9.2

CREATE OR REPLACE FUNCTION users_code_seq()
   RETURNS "trigger" AS $$
BEGIN
        
        IF (TG_OP = 'INSERT') THEN
        UPDATE public.company_seqs SET last_seq = (last_seq + 1) WHERE company_id = NEW.company_id;
        
        ELSEIF NEW.code IS NULL THEN
        SELECT last_seq INTO code FROM public.company_seqs WHERE company_id = NEW.company_id ORDER BY last_seq DESC;
        
        END IF;
        
        RETURN NEW;
        
END;
$$ LANGUAGE plpgsql;

- The command above, does not insert the last_seq into users.code column. And I don't know why.

If I comment the line: ELSEIF NEW.code IS NULL THEN, the data is inserted into the users.code column.

But as the customer can add data into that column, I only insert the last_seq if he/she didn't insert anything.

So I need that ELSEIF NEW.code IS NULL THEN.

- What am I missing? 

Thanks

Lucas