Question

有没有办法解决这个错误，或者我的代码中缺少一些内容，我正在学习postgresql并且我一直在研究table inheritance and triggers我有两个表temporary_object table并且persons table人员表继承了临时对象拥有的所有属性，然后我在人员表上创建了一个触发器函数，该函数检查具有相同id before updating tables我的insert query的记录当我尝试运行errors时，问题就出现了，我正在获取这些ERROR: end of trigger procedure achieved without RETURN CONTEXT: function PL / pgSQL muli_function () ERROR: end of trigger procedure achieved without RETURN SQL-state: 2F005 Context: The PL / pgSQL muli_function ()

INSERT INTO persons (id, time_create, time_dead, First_name, Last_name) values (1, '2011-10-07 15:25:00 EDT', '2011-10-07 3:25 PM EDT', 'sathiya', 'james');

这是通过插入查询

CREATE FUNCTION muli_function() RETURNS trigger AS '
BEGIN
  IF tg_op = ''UPDATE'' THEN
     UPDATE persons
     SET time_dead = NEW.time_create
     Where
         id = NEW.id
         AND time_dead IS NULL
         ;
  RETURN new;
  END IF;
END
' LANGUAGE plpgsql;

CREATE TRIGGER sofgr BEFORE INSERT OR DELETE OR UPDATE
        ON persons FOR each ROW
        EXECUTE PROCEDURE muli_function();

这是我的触发器功能并触发自身

CREATE TABLE temporary_object
(
  id integer NOT NULL,
  time_create timestamp without time zone NOT NULL,
  time_dead timestamp without time zone,
  PRIMARY KEY (id, time_create)
);

CREATE TABLE persons
(

  First_Name text,
  Last_Name text
)
INHERITS (temporary_object);

这些是我的两个表查询

{{1}}

Answer 1

试试这个：

CREATE FUNCTION muli_function() RETURNS trigger AS '
BEGIN
  IF tg_op = ''UPDATE'' THEN
     UPDATE persons
     SET time_dead = NEW.time_create
     Where
         id = NEW.id
         AND time_dead IS NULL
         ;

  END IF;
  RETURN new;
END
' LANGUAGE plpgsql;

UPD更好的是：

CREATE FUNCTION muli_function() RETURNS trigger AS '
BEGIN
  IF tg_op = ''UPDATE'' THEN
    IF NEW.time_dead IS NULL THEN
     NEW.time_dead = NEW.time_create
    END IF;      
  END IF;
  RETURN new;
END
' LANGUAGE plpgsql;

Answer 2

您可以为INSERT OR UPDATE触发器定义触发器过程，但不要为INSERT提供案例（就像mu太短评论一样），只有UPDATE。因此，触发器执行INSERT的过程，然后它没有找到任何要执行的内容，并且在没有RETURN的情况下退出，这显然是一个错误。

如何修复程序结束触发错误

2 个答案: