[Postgres plpgsql尝试创建函数时出错

Question

Postgres 9.5.2

正在获取：

ERROR:  syntax error at end of input
LINE 14: ...ast_modified_at, NEW.first_name, NEW.last_name);

对于运行在$$;之后的psql shell中的这些语句：

CREATE OR REPLACE FUNCTION customer_history_trigger() RETURNS trigger
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
BEGIN
    NEW.last_modified_at = now();
    IF (TG_OP = 'UPDATE') THEN
        IF OLD.status IS DISTINCT FROM NEW.status or OLD.parent_id IS DISTINCT FROM NEW.parent_id
        or OLD.first_name IS DISTINCT FROM NEW.first_name or OLD.last_name IS DISTINCT FROM NEW.last_name
        or OLD.company IS DISTINCT FROM NEW.company or OLD.company_alias IS DISTINCT FROM NEW.company_alias
        THEN
            INSERT INTO customerhistory
                (customer_id, modified_at, first_name, last_name)
            VALUES
                (NEW.id, NEW.last_modified_at, NEW.first_name, NEW.last_name);
        END IF;
    ELSIF (TG_OP = 'INSERT') THEN
        INSERT INTO customerhistory
            (customer_id, modified_at, first_name, last_name)
        VALUES
            (NEW.id, NEW.last_modified_at, NEW.first_name, NEW.last_name);
    END IF;
    RETURN NEW;
END;
$$;

错误中还有一个小箭头指向行尾的分号。很明显，它不喜欢此行末尾的分号：(NEW.id, NEW.last_modified_at, NEW.first_name, NEW.last_name);，但我不知道为什么。

Answer 1

原来这是一个与INSERT INTO customerhistory和VALUES之后的换行有关的问题。如果我删除了这些换行符，则将该语句粘贴到psql中，它将起作用。但是，它不适用于这些换行符。

如果我在同一行上打开括号，也许也可以吗？没有测试。